The isosceles
triangle theorem states that if two sides
congruent, then the angles opposite those sides are
of a triangle are

Answers

Answer 1

Answer:

If two sides of a triangle are congruent, then the angles opposite to these sides are congruent.

Step-by-step explanation:

Congruent/Congruency: having the same size and shape congruent triangles.

Theorem 1: If a line is drawn parallel to one side of a triangle to intersect the midpoints of the other two sides, then the two sides are divided in the same ratio.

I hope this helped, have a great day <3


Related Questions

what’s the answer????

Answers

Answer:Domar range x

Step-by-step explanation:

612,315 in scientific notation

Answers

Answer: 6.12315 × 105

Step-by-step explanation: No worry's just here for the fun of it

Based on the graph, which statement could describe Janelle’s trip home from school?

Answers

Based on the graph, which statement could describe Janelle’s trip home from school is that D. Janelle rode the bus to the bus stop, talked with a friend, and then walked home.

What is a graph?

It should be noted that a graph is a diagram that is used to represent a system of connections or interrelations that is among two or more things by a number of distinctive dots, bars, etc

Therefore, based on the graph, which statement could describe Janelle’s trip home from school is that Janelle rode the bus to the bus stop, talked with a friend, and then walked home.

In conclusion, the correct option is D.

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Based on the graph, which statement could describe Janelle's trip home from school?

Janelle waited for the bus, rode the bus, and then walked home.

Janelle walked the opposite direction from home to the library, rode the bus, and then walked to a friend's house.

Janelle walked home at a constant speed.

Janelle rode the bus to the bus stop, talked with a friend, and then walked home

If 8x + 7y = 6 is a true equation, what
would be the value of 5 + 8x + 7y?

Answers

The answer should be 11

Answer:

11

Step-by-step explanation:

Which answer is it? I need an answer asap!!

Answers

Answer:

[tex]2(35)+4=74[/tex]

∠SQR = 74

Step-by-step explanation:

[tex](2m+4)+(3m+1)=180\\5m+5=180\\ -5\\5m=175\\/5\\175/5=35[/tex]

Answer:

SQR = 74

Step-by-step explanation:

2m + 4 + 3m + 1 = 180

5m + 5 = 180

5m = 175

m = 35

35 * 2 + 4

70 + 4 = 74

Angle SQR = 74

Leslie can type 56 words per minute. Each page of a report contains an average of 420 words. How many pages of the report can Leslie type in one hour?

Answers

If Leslie is about to type 56 words per minute, she would be able to type 8 pages in one hour

How many words can Leslie type in one hour?

The fact that Leslie can type 56 words per minute means that he is able, means that the number of words she is able to type in one hour is determined as 56 words multiplied 60 minutes which make an hour

number of words in one hour=56*60

number of words in one hour=3360

The number of pages typed is determined as the 3360 words typed in one hour divided by the number of words in a page

number of pages type=3360/420

number of pages typed=8 pages

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Let [tex]\alpha[/tex] and [tex]\beta[/tex] be real number such that [tex] - \frac{\pi}4 < \beta < 0 < \alpha < \frac{\pi}{4} .[/tex] If [tex]\sin( \alpha + \beta ) = \frac{1}{3}[/tex] and [tex]\cos( \alpha - \beta ) = \frac{2}{3}[/tex] , then the greatest integer less than or equal to [tex] \bigg( \frac{ \sin( \alpha ) }{ \cos( \alpha ) } + \frac{ \cos( \beta ) }{ \sin( \alpha ) } + \frac{ \cos( \alpha ) }{ \sin( \beta ) } + \frac{ \sin( \beta ) }{ \cos( \alpha ) } \bigg) {}^{2} \\[/tex]​ is

Answers

Step-by-step explanation:

We have,

[tex]\begin{gathered} \bullet \: \bold{ - \dfrac{\pi}{4} < \beta < 0 < \alpha < \dfrac{\pi}{4} } \\ \\ \implies \: - \dfrac{\pi}{4} < \alpha + \beta < \dfrac{\pi}{4} \end{gathered}[/tex]

[tex]\begin{gathered} \rm\bullet \: \: \: \sin( \alpha + \beta ) = \dfrac{1}{3} \: \: \: \: \: and \: \: \: \: \: \cos( \alpha - \beta ) = \dfrac{2}{3} \\ \end{gathered} [/tex]

Now,

[tex]\begin{gathered} y= \bigg( \dfrac{ \sin( \alpha ) }{ \cos( \beta ) } + \dfrac{ \cos( \beta ) }{ \sin( \alpha ) } + \dfrac{ \cos( \alpha ) }{ \sin( \beta ) } + \dfrac{ \sin( \beta ) }{ \cos( \alpha ) } \bigg)^{2} \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \bigg( \dfrac{ \sin( \alpha ) }{ \cos( \beta ) } + \dfrac{ \sin( \beta ) }{ \cos( \alpha ) } + \dfrac{ \cos( \beta ) }{ \sin( \alpha ) } + \dfrac{ \cos( \alpha ) }{ \sin( \beta ) } \bigg)^{2} \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \bigg( \dfrac{ \sin( \alpha ) \cos( \alpha ) + \sin( \beta \cos( \beta ) ) }{ \cos( \beta ) \cos( \alpha) } + \dfrac{ \sin( \alpha) \cos( \alpha ) + \sin( \beta ) \cos( \beta ) }{ \sin( \alpha ) \sin( \beta ) } \bigg)^{2} \\\end{gathered}[/tex]

[tex]\begin{gathered} \implies y= \bigg( \dfrac{ \sin( \alpha + \beta ) }{ \cos( \beta ) \cos( \alpha) } + \dfrac{ \sin( \alpha + \beta ) }{ \sin( \alpha ) \sin( \beta ) } \bigg)^{2} \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \sin^{2} ( \alpha + \beta ) \bigg( \dfrac{ 1 }{ \cos( \beta ) \cos( \alpha) } + \dfrac{ 1 }{ \sin( \alpha ) \sin( \beta ) } \bigg)^{2} \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \sin^{2} ( \alpha + \beta ) \bigg( \dfrac{\cos( \beta ) \cos( \alpha) + \sin( \alpha ) \sin( \beta ) }{ \cos( \beta ) \cos( \alpha) \sin( \alpha ) \sin( \beta )} \bigg)^{2} \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \sin^{2} ( \alpha + \beta ) \bigg( \dfrac{\cos( \alpha - \beta ) }{ \cos( \beta ) \cos( \alpha) \sin( \alpha ) \sin( \beta )} \bigg)^{2} \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \dfrac{4\sin^{2} ( \alpha + \beta ) \cdot\cos^{2} ( \alpha - \beta ) }{ \left \{2\cos( \alpha ) \cos( \beta ) \cdot 2\sin( \alpha ) \sin( \beta ) \right \}^{2} } \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \dfrac{4\sin^{2} ( \alpha + \beta ) \cdot\cos^{2} ( \alpha - \beta ) }{ \left \{\cos( \alpha + \beta ) + \cos( \alpha + \beta ) \right \} ^{2} \left \{ \cos( \alpha - \beta ) - \cos( \alpha + \beta ) \right \}^{2} } \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \dfrac{4\sin^{2} ( \alpha + \beta ) \cdot\cos^{2} ( \alpha - \beta ) }{ \left \{ \cos^{2} ( \alpha - \beta ) - \cos^{2} ( \alpha + \beta ) \right \}^{2} } \\\end{gathered}[/tex]

[tex]\begin{gathered} \implies y= \dfrac{4\sin^{2} ( \alpha + \beta ) \cdot\cos^{2} ( \alpha - \beta ) }{ \left \{ \cos^{2} ( \alpha - \beta ) - 1 + \sin^{2} ( \alpha + \beta ) \right \}^{2} } \\\end{gathered}[/tex]

Putting the values given above, we get,

[tex]\begin{gathered} \implies y= \dfrac{4 \cdot \dfrac{1}{9} \cdot\dfrac{4}{9} }{ \left \{ \dfrac{4}{9} - 1 + \dfrac{1}{9} \right \}^{2} } \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \dfrac{\dfrac{16}{81} }{ \left \{ \dfrac{5}{9} - 1\right \}^{2} } \\\end{gathered}[/tex]

[tex]\begin{gathered} \implies y= \dfrac{\dfrac{16}{81} }{ \left \{ \dfrac{5 - 9}{9}\right \}^{2} } \\\end{gathered} [/tex]

[tex]\begin{gathered} \implies y= \dfrac{\dfrac{16}{81} }{ \left \{ \dfrac{- 4}{9}\right \}^{2} } \\\end{gathered}[/tex]

[tex]\begin{gathered} \implies y= \dfrac{\dfrac{16}{81} }{ \dfrac{16}{81}} \\\end{gathered} [/tex]

[tex]⟹y=1[/tex]

What property is 3x=x3

Answers

Step-by-step explanation:

So, the expression “three times the variable x” can be written in a number of ways: 3x, 3(x), or 3 · x. Use the distributive property to expand the expression 9(4 + x).

Select the correct answer. What is the solution to |2x − 8| < 2? A. 3 < x < 5 B. -5 < x < -3 C. x > 5 or x < 3 D. x > -3 or x < -5 Reset Next

Answers

Answer:

3 < x < 5

Step-by-step explanation:

Expression is |2x − 8| < 2

The absolute rule says that if |u| < a then -a < u < a

Here u = 2x-8

So we get -2 < 2x - 8 < 2

This means

2x - 8 > -2            

==> 2x > -2 + 8       (add 8 to both sides)

==> 2x > 6               (simplify)

==> x > 3                  (divide by 2 both sides)

and,

2x - 8 < 2 gives

==> 2x < 2 + 8          (add 8 to both sides)

==> 2x < 10              (simplify)

==> x < 5                  (divide by 2 both sides)

So the solution to |2x − 8| < 2

is 3 < x < 5

A recent student poll showed that 18% of the
high school students are in a music class.
What is the ratio of high school students
who are in a music class to students who
are not? (Example 2)

Answers

The ratio of high school students who are in a music class to students who are not is 9 : 41.

What do we mean by ratio?A ratio in mathematics indicates how many times one number contains another. For example, if a bowl of fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six. Similarly, the lemon to orange ratio is 6:8, and the orange to total fruit ratio is 8:14.

So, 18% of high school students are in a music class which means the rest 82% are not in a music class.

Then the ratio:

18 : 82

Simplest form:

18/82 = 9/41 = 9 : 41

Therefore, the ratio is 9 : 41.

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Solve the equation, 13|x−8|=10. Select each correct answer. Responses x=−30 x equals negative 30 x=−22 x equals negative 22 x=103 x equals 10 over 3 x = 8 x, = 8 x = 30 x, = 30 x = 38 x, = 38

Answers

The solution to the equation 1/3|x - 8| = 10 is x = 38

What are expressions?

Expressions are mathematical statements that are represented by variables, coefficients and operators

How to determine the solution to the equation?

The equation is given as

1/3|x - 8| = 10

Multiply through by 3

So, we have

|x - 8| = 30

Remove the absolute bracket

So, we have

x - 8 = 30

Add 8 to both sides of the equation

So, we have

x = 38

Hence, the solution to the equation is x = 38

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I need help solving please help me and give me the answer or how to solve it

Answers

96 is the answer that’s the answer

Answer:

108

Step-by-step explanation:

3²(2³+4) calculate to the power of 2 and get 9.

9 (2³+4) calculate 2 to the power of 3 and get 8.

9 (8+4) add 8 and 4 to get 12.

9 · 12 = 108 multiply 9 and 12 to get 108.

Use prime factors to find the square root of 777924.

Answers

Using prime factors the root of given variety of 777924 is 882 .

The root of any variety is adequate to variety, that once square offers the first variety.The process of writing variety because the product of prime numbers is prime factorization. Prime numbers area unit the numbers that have solely 2 factors, one and therefore the variety itself.

The image of prime factorization of 777924 is given below

By prime factorization of 777924 we have a tendency to follow five easy steps:

1. we have a tendency to write variety 777924 higher than a 2-column table

2. we have a tendency to divide 777924 by the tiniest attainable factor

3. we have a tendency to write down on the left facet of the table the factor and next variety to factorize on the ride facet

4. we have a tendency to still consider this fashion (we subsume odd numbers by making an attempt little prime factors)

5. we have a tendency to continue till we have a tendency to reach one on the ride facet of the table

Prime factorization of 777924 = 1×2×2×3×3×3×3×7×7×7×7

On doing square root , we get

[tex]\sqrt{777924} =\sqrt{ 1\times2\times2\times3\times3\times3\times3\times7\times7\times7\times7}[/tex]

              = 882

     

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Juan and his children went into a restaurant where they sell drinks for $2 each and tacos for $4 each. Juan has $40 to spend and must buy a minimum of 11 drinks and tacos altogether. If xx represents the number of drinks purchased and yy represents the number of tacos purchased, write and solve a system of inequalities graphically and determine one possible solution.

Answers

The system of inequalities for the given situation is x+y≤11 and 2x+4y≥40.

Given that, the cost of each drink = $2 and the cost of each taco = $4.

What is a system of inequalities?

A system of inequalities is a set of two or more inequalities in one or more variables. Systems of inequalities are used when a problem requires a range of solutions, and there is more than one constraint on those solutions.

x represents the number of drinks purchased and y represents the number of tacos purchased.

Juan has $40 to spend and must buy a minimum of 11 drinks and tacos altogether.

So inequalities are x+y≤11 and 2x+4y≥40

Therefore, the system of inequalities for the given situation is x+y≤11 and 2x+4y≥40.

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A rectangular auditorium seats 2310 people. The number of seats in each row exceeds the number of rows by 13. Find the number of seats in each row.

Answers

There are 40 rows with 53 seats in each row.

What exactly are equations?An equation, in its most basic form, is a mathematical statement that shows that two mathematical expressions are equivalent.For example, 3x + 5 = 14 is an equation wherein the 3x + 5 and 14 are two expressions kept separate by a 'equal' sign.

This auditorium is divided into rows of seats, and because it is rectangular, each row has the same number of seats.

So we can calculate the total number of seats by multiplying the number of rows by the number of seats in each row. To calculate the area, multiply the length by the width of a rectangle.Assume there are x rows. Because the number of seats in each row exceeds the number of rows by 13, each row would have x+13 seats. There are a total of 2120 seats available.

So,

x(x+13) = 2120x2 + 13x = 2120x2 + 13x - 2120 = 0(x+53)(x-40) = 0x = -53, 40

Therefore, there are 40 rows with 53 seats in each row because we can't have a negative number of rows.

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Eula needs to buy binders that cost $4 each and notebooks that cost $2 each. She has $20. The graph of the inequality 4x + 2y ≤ 20, which represents the situation, is shown. What is the greatest number of binders Eula can buy? What is the greatest number of notebooks Eula can buy? If Eula buys 7 notebooks, what is the greatest number of binders she can buy?

Answers

The greatest number of binders Eula can buy is 5

The greatest number of notebooks Eula can buy is 10

The greatest number of binders she can buy  if Eula buys 7 notebooks is 3/2

What is inequality?

It is an order relationship that is greater than, greater than, or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

We have,

4x + 2y ≤ 20

x = number of binders

y = number of notebooks

The greatest number of binders Eula can buy:

Put y = 0.

4x + 2 x 0 ≤ 20

4x ≤ 20

x ≤ 20/4

x ≤ 5

The greatest number of notebooks Eula can buy:

Put x = 0.

4x + 2y ≤ 20

4 x 0 + 2y ≤ 20

2y ≤ 20

y ≤ 10

Eula buys 7 notebooks then, the greatest number of binders she can buy:

4x + 2y ≤ 20

4x + 2 x 7 ≤ 20

4x + 14 ≤ 20

4x ≤ 20 - 14

4x ≤ 6

x ≤ 6/4

x ≤ 3/2

Thus,

The greatest number of binders Eula can buy is 5

The greatest number of notebooks Eula can buy is 10

The greatest number of binders she can buy  if Eula buys 7 notebooks is 3/2

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Answer:

Eula needs to buy binders that cost $4 each and notebooks that cost $2 each. She has $20. The graph of the inequality 4x + 2y ≤ 20, which represents the situation, is shown.What is the greatest number of binders Eula can buy? What is the greatest number of notebooks Eula can buy? If Eula buys 7 notebooks, what is the greatest number of binders she can buy?  ⇒ 1

Step-by-step explanation:

Line AB contains points A(4, 5) and B(9, 7). What is the slope of ?

– negative StartFraction 5 Over 2 EndFraction
– negative StartFraction 2 Over 5 EndFraction
StartFraction 2 Over 5 EndFraction
StartFraction 5 Over 2 EndFraction

Answers

The slope of line AB with points A(4, 5) and B(9, 7) is 2/5.

What is slope?

The slope or gradient of a line is a number that describes both the direction and the steepness of the line.

We have,

A(4, 5) and B(9, 7)

The slope of a line with points A and B is given by:

= d - b / c - a

Where A(a, b) and B(c, d) are the coordinates of the points.

We have the points:

A(4, 5) = (a, b)

B(9, 7) = (c, d)

The slope of the line AB:

= (7 - 5) / (9 - 4) = 2 / 5

Therefore the slope of line AB with points A(4, 5) and B(9, 7) is 2/5.

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A farmer has 150 yards of fencing to place around a rectangular garden. The fence will have an opening that is 1/3 of the garden's length. Write a function A(x) that describe the area of the garden, where x is the length of the garden. Find the dimensions if that has a maximum area, and find the maximum area

Answers

The garden has a length of 37.5 yards and width of 37.5 yards as well as an opening of 12.5 yards.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Let x represent the length and y represent the width.

150 yards of fencing is available, hence:

2(x + y) = 150

x + y = 75

y = 75 - x     (1)

The area (A) of the garden is given as:

A = xy

A = x(75 - x)

A = 75x - x²

The maximum area is at A' = 0

A' = 75 - 2x

75 - 2x = 0

x = 37.5 yards

y = 75 - x = 75 - 37.5 = 37.5

Opening of the garden = 1/3 * 37.5 = 12.5 yards

The garden has a length of 37.5 yards and width of 37.5 yards as well as an opening of 12.5 yards.

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what is the reference angle and cosince of [tex]\frac{7\pi }{6}[/tex]?

Answers

Answer:

The reference angle is π/6.

Cosine is -(√3)/2.

Step-by-step explanation:

To find the reference angle, find the acute angle in quadrant I and use it as a reference for the given expression.

For the cosine, the cosine is the sine of the complementary angle. The complementary angle is the given angle beside it minus a right angle, which is exactly 90 degrees. If the angle is 25 degrees, its complementary angle will be double its amount, 50 degrees. Then, for angle angle measured "theta", the cosine is equal to the sine's right-angle subtracted by theta.

9.949 round to the nearest tenth and hundredth

Answers

9.9 and 9.95 are the result of rounding off 9.949 to the nearest tenth and hundredth.

What is Rounding off?When a number is rounded off, its value is maintained but is brought closer to the next number, simplifying the number. For whole numbers as well as decimals at different places of hundreds, tens, tenths, etc., it is done. An integer with one or more "0"s at the end in a specific base is said to be round. In this way, 590 is more rounded than 592 but less rounded than 600. A round number is frequently understood to stand for a value or values close to the nominal value expressed in both formal and informal language.

So, rounding off:

9.949 (nearest tenth) = 9.99.949 (nearest hundredth) = 9.95

Therefore, rounding off of 9.949 to the nearest tenth and hundredth is 9.9 and 9.95.

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Please help with Algebra!

Answers

Answer:

[tex]\textsf{Rewrite the original equation as $x^2+\dfrac{1}{3}x=\boxed{\dfrac{2}{9}}$}[/tex]

[tex]\textsf{Add appropriate number to make the left side a perfect square trinomial}[/tex]

[tex]x^2+\dfrac{1}{3}x+\boxed{\dfrac{1}{36}}=\dfrac{2}{9}+\boxed{\dfrac{1}{36}}[/tex]

[tex]\textsf{Factor the left side as a perfect square and combine the right hand side into one number}[/tex][tex]\left(x+\boxed{\dfrac{1}{6}}\:\right)^2=\boxed{\dfrac{1}{4}}[/tex]

[tex]\textsf{Final answers $x=\boxed{\dfrac{1}{3}, - \dfrac{2}{3}}$}[/tex]

Step-by-step explanation:

Given equation:

[tex]18x^2+6x-4=0[/tex]

Add 4 to both sides:

[tex]\implies 18x^2+6x-4+4=0+4[/tex]

[tex]\implies 18x^2+6x=4[/tex]

Divide both sides by 18:

[tex]\implies \dfrac{18x^2}{18}+\dfrac{6x}{18}=\dfrac{4}{18}[/tex]

[tex]\implies x^2+\dfrac{1}{3}x=\dfrac{2}{9}[/tex]

Add the square of half the coefficient of x to both sides:

[tex]\implies x^2+\dfrac{1}{3}x+\left(\dfrac{\frac{1}{3}}{2}\right)^2=\dfrac{2}{9}+\left(\dfrac{\frac{1}{3}}{2}\right)^2[/tex]

[tex]\implies x^2+\dfrac{1}{3}x+\left(\dfrac{1}{6}}\right)^2=\dfrac{2}{9}+\left(\dfrac{1}{6}\right)^2[/tex]

[tex]\implies x^2+\dfrac{1}{3}x+\dfrac{1}{36}=\dfrac{2}{9}+\dfrac{1}{36}[/tex]

Factor the perfect square trinomial on the left side and combine the numbers on the right side:

[tex]\implies \left(x+\dfrac{1}{6}\right)^2=\dfrac{1}{4}[/tex]

Square root both sides:

[tex]\implies \sqrt{\left(x+\dfrac{1}{6}\right)^2}=\sqrt{\dfrac{1}{4}}[/tex]

[tex]\implies x+\dfrac{1}{6}=\pm \dfrac{\sqrt{1}}{\sqrt{4}}[/tex]

[tex]\implies x+\dfrac{1}{6}=\pm \dfrac{1}{2}[/tex]

Subtract 1/6 from both sides:

[tex]\implies x+\dfrac{1}{6}-\dfrac{1}{6}=\pm\dfrac{1}{2}-\dfrac{1}{6}[/tex]

[tex]\implies x=-\dfrac{1}{6}\pm\dfrac{1}{2}[/tex]

Therefore:

[tex]\implies x=-\dfrac{1}{6}+\dfrac{1}{2}=\dfrac{1}{3}[/tex]

[tex]\implies x=-\dfrac{1}{6}-\dfrac{1}{2}=-\dfrac{2}{3}[/tex]

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For [tex]\rm x \in \mathbb{R}[/tex], let the function y(x) be the solution of the differential equation
[tex] \rm \frac{dy}{dx} + 12y = \cos \bigg( \frac{\pi}{12}x \bigg ) , \: \: \: \: y(0) = 0 \\ [/tex]
Then, which of the following statements is/are TRUE?

(A) y(x) is an increasing function

(B) y(x) is a decreasing function

(C) There exists a real number β such that the line y = β intersects the curve y = y(x) at infinitely many points

(D) y(x) is a periodic function

Answers

In the differential equation

[tex]\dfrac{dy}{dx} + 12y = \cos\left(\dfrac{\pi x}{12}\right)[/tex]

multiply on both sides by the integrating factor

[tex]\mu = \exp\left(\displaystyle\int12\,dx\right) = e^{12x}[/tex]

Then the left side condenses to the derivative of a product.

[tex]e^{12x} \dfrac{dy}{dx} + 12 e^{12x} y = e^{12x} \cos\left(\dfrac{\pi x}{12}\right)[/tex]

[tex]\dfrac{d}{dx}\left[e^{12x}y\right] = e^{12x}\cos\left(\dfrac{\pi x}{12}\right)[/tex]

Integrate both sides with respect to [tex]x[/tex], and use the initial condition [tex]y(0)=0[/tex] to solve for the constant [tex]C[/tex].

[tex]\displaystyle \int \frac{d}{dx} \left[e^{12x}y\right] \, dx = \int e^{12x} \cos\left(\dfrac{\pi x}{12}\right) \, dx[/tex]

As an alternative to integration by parts, recall

[tex]e^{ix} = \cos(x) + i \sin(x)[/tex]

Now

[tex]e^{12x} \cos\left(\dfrac{\pi x}{12}\right) = e^{12x} \mathrm{Re}\left(e^{i\pi x/12}\right) = \mathrm{Re}\left(e^{(12+i\pi/12)x}\right)[/tex]

[tex]\displaystyle \int \mathrm{Re}\left(e^{(12+i\pi/12)x}\right) \, dx = \mathrm{Re}\left(\int e^{(12+i\pi/12)x} \, dx\right)[/tex]

[tex]\displaystyle. ~~~~~~~~ = \mathrm{Re}\left(\frac1{12+i\frac\pi{12}} e^{(12+i\pi/12)x}\right) + C[/tex]

[tex]\displaystyle. ~~~~~~~~ = \mathrm{Re}\left(\frac{12 - i\frac\pi{12}}{12^2 + \frac{\pi^2}{12^2}} e^{12x} \left(\cos\left(\frac{\pi x}{12}\right) + i \sin\left(\frac{\pi x}{12}\right)\right)\right) + C[/tex]

[tex]\displaystyle. ~~~~~~~~ = \frac{12}{12^2 + \frac{\pi^2}{12^2}} e^{12x} \cos\left(\frac{\pi x}{12}\right) + \frac\pi{12} e^{12x} \sin\left(\frac{\pi x}{12}\right) + C[/tex]

[tex]\displaystyle. ~~~~~~~~ = \frac1{12(12^4+\pi^2)} e^{12x} \left(12^4 \cos\left(\frac{\pi x}{12}\right) + \pi (12^4+\pi^2) \sin\left(\frac{\pi x}{12}\right)\right) + C[/tex]

Solve for [tex]y[/tex].

[tex]\displaystyle e^{12x} y = \frac1{12(12^4+\pi^2)} e^{12x} \left(12^4 \cos\left(\frac{\pi x}{12}\right) + \pi (12^4+\pi^2) \sin\left(\frac{\pi x}{12}\right)\right) + C[/tex]

[tex]\displaystyle y = \frac1{12(12^4+\pi^2)} \left(12^4 \cos\left(\frac{\pi x}{12}\right) + \pi (12^4+\pi^2) \sin\left(\frac{\pi x}{12}\right)\right) + C[/tex]

Solve for [tex]C[/tex].

[tex]y(0)=0 \implies 0 = \dfrac1{12(12^4+\pi^2)} \left(12^4 + 0\right) + C \implies C = -\dfrac{12^3}{12^4+\pi^2}[/tex]

So, the particular solution to the initial value problem is

[tex]\displaystyle y = \frac1{12(12^4+\pi^2)} \left(12^4 \cos\left(\frac{\pi x}{12}\right) + \pi (12^4+\pi^2) \sin\left(\frac{\pi x}{12}\right)\right) - \frac{12^3}{12^4+\pi^2}[/tex]

Recall that

[tex]R\cos(\alpha-\beta) = R\cos(\alpha)\cos(\beta) + R\sin(\alpha)\sin(\beta)[/tex]

Let [tex]\alpha=\frac{\pi x}{12}[/tex]. Then

[tex]\begin{cases} R\cos(\beta) = 12^4 \\ R\sin(\beta) = 12^4\pi+\pi^3 \end{cases} \\\\ \implies \begin{cases} (R\cos(\beta))^2 + (R\sin(\beta))^2 = R^2 = 12^8 + (12^4\pi + \pi^3)^2 \\ \frac{R\sin(\beta)}{R\cos(\beta)}=\tan(\beta)=\pi+\frac{\pi^3}{12^4}\end{cases}[/tex]

Whatever [tex]R[/tex] and [tex]\beta[/tex] may actually be, the point here is that we can condense [tex]y[/tex] into a single cosine expression, so choice (D) is correct, since [tex]\cos(x)[/tex] is periodic. This also means choice (C) is also correct, since [tex]\beta=\cos(x)\implies\beta=\cos(x+2n\pi)[/tex] for infinitely many integers [tex]n[/tex]. This simultaneously eliminates (A) and (B).

5. The Cupcake Café makes 4 and 1/2 times as much revenue on doughnuts as muffins. If total sales were $44,000 for May, what dollar amount of each was sold?

Answers

Answer:

Step-by-step explanation:

According to the question, the cupcake cafe makes 1/2 times as much revenue on doughnuts as muffins and the total revenue is total sales were $44,000. Let us assume that the revenue on muffins is X and then the revenue on doughnuts is 412X. 4 1 2 X . The amount of money earned from muffins is 20000 dollars

11)Dan’s school is selling tickets to the spring musical. On the first day of ticket sales, the school sold 8 senior citizen tickets and 12 child tickets for a total of $264. The school took in $237 on the second day by selling 11 senior citizen tickets and 6 child tickets. Find the price of each type of ticket. A)Define your variables. C)Solve the system using a method of your choice. State your final answer in a complete sentence.

Answers

If the school earns $264 for 8 senior tickets and 12 child tickets and $237 for 11 senior tickets and 6 child tickets then the price of 1 senior ticket be $15 and the price of child ticket be $12.

Given that on the first day of ticket sales, the school sold 8 senior citizen tickets and 12 child tickets for a total of $264 and the school earns $237 on IInd day by selling 11 senior citizen tickets and 6 child tickets.

We are required to define the variables and solve the system of the equations.

Suppose the price of 1 ticket of senior citizen be x.

Suppose the price of 1 ticket of child be y.

The equations will be:

8x+12y=264--------1

11x+6y=237--------2

Multiply equation 1 by 11 and multiply equation 2 by 8 and then subtract equation 2 from equation 1.

88x+132y-88x-48y=2904-1896

84y=1008

y=1008/84

y=12

Use the value of y in equation 1 to get the value of x.

8x+12y=264

8x+12*12=264

8x+144=264

8x=264-144

8x=120

x=120/8

x=15

Hence if the school earns $264 for 8 senior tickets and 12 child tickets and $237 for 11 senior tickets and 6 child tickets then the price of 1 senior ticket be $15 and the price of child ticket be $12.

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The cost of a Senior citizen ticket is $15, while a children's ticket cost $12.

On the first day:

The school sold 12 child tickets and 8 senior citizen tickets for a total amount of $264.

On the second day:

The school sold 11 senior citizen tickets and 6 child tickets for a total of $237.

Let A be the price of a senior citizen ticket and B be the price of a child ticket.

So, the equation for the first day:

8A + 12B = 264

The equation for the second day,

11A + 6B = 237

Multiplying the equation for the second day by 2 and subtracting the equation for the first day.

We get,

22A + 12B - 8A - 12B = 474 - 264

14A = 210

A = 15

Substituting the value of A in the equation 8A + 12B = 264,

8A + 12B = 264

8(15) + 12B = 264

120 + 12B = 264

12B = 144

B = 12

Therefore, the price of a senior citizen ticket is $15 and the price of a child ticket is $12.

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cynthia besch wants to buy a rug for a room that is 25ft wide and 33ft long. She wants to leave a uniform strip of floor around the rug. she can afford to buy 513 square feet of carpeting. what dimensions should the rug have

Answers

The dimensions of the rug would be 27 feet long and 19 feet wide with a 6 foot space around the carpet uniformly.

How to find the dimension of the rug?

She wants to buy a rug for a room that is 25 ft wide and 33 ft long.

She wants  to leave a uniform strip of floor around the rug.

she can afford to buy 513 square feet of carpeting.

Cynthia room area = lw

where

l = lengthw = width

Therefore,

Cynthia room area = 25 × 33

Cynthia room area = 825 ft²

She wants to leave a uniform strip of floor all around the rug and has affordability to buy 513 square feet of carpet.

Therefore, the dimension the rug should have is as follows:

(25 - 6) (33 - 6) = 513

19 × 27 = 513 ft²

Therefore, the dimensions of the rug would be 27 feet long and 19 feet wide with a 6 foot space around the carpet uniformly.

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what is the circumference of a circle whose diameter is 49m​

Answers

Answer:

The circumference is 153.93804... or 153.94...

Step-by-step explanation:

Hope it helps! =D

Answer:

153.94 meters.

Step-by-step explanation:

The formula for finding the circumference of a circle is C = πd, where d is the diameter of the circle. With a diameter of 49m, the circumference can be calculated as C = π(49) ≈ 153.94m. Therefore, the circumference of the circle is approximately 153.94 meters.

A yard has a perimeter of 400 feet. If eight times the length of the yard equals seventeen times the width

Answers

The length and width of the yard with perimeter of 400 feet are 136 ft and 64 ft respectively.

How to find perimeter of a rectangular yard?

The yard has a perimeter of 400 feet.

Eight times the length of the yard equals seventeen times the width.

Therefore,

perimeter of a rectangular yard = 2(l + w)

where

l = lengthw = width

Therefore,

8l = 17w

Hence,

l = 17 / 8 w

perimeter of a rectangular yard = 2(17 / 8 w + w)

perimeter of a rectangular yard = 2( 25  /8 w)

perimeter of a rectangular yard = 50/ 8 w

400 = 50 / 8 w

cross multiply

3200 = 50w

divide both sides by 50

w = 3200 / 50

w = 64 ft

l = 17 / 8 × 64 = 136 ft

Therefore, the length and width of the yard with perimeter of 400 feet are 136 ft and 64 ft respectively.

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Please help me geometry

Answers

Answer :

[tex] \large \bf \implies \angle{BAC} = 40 \degree[/tex]

Step-by-step explanation :

[tex] \bf \implies \angle{ABC} + \angle{BAC} = 90\degree[/tex] [The acute angles of a right triangle are complementary]

[tex] \bf \implies 50x + 40x = 90\degree[/tex]

Substitute :

[tex]\angle{BAC} = 40x \: \: , \: \: \angle{ABC} = 50x \: into \: \angle{ABC} + \angle{BAC} = 90\degree[/tex]

[tex]\sf{x = 1}[/tex]

Calculate 50x + 40x = 90°

[tex]\sf{\angle{BAC} = 40}[/tex]

Substitute x = 1 into [tex]\bf{\angle{BAC} = 40x}[/tex]

[tex] \boxed{ \bold{\angle{BAC} = 40} }\: \mathfrak{ans.}[/tex]

What is the base 10 representation of 142^5 (142 in base 5)? I know it's 47, but I need to know why. None of the answers to this question have an actual explanation, they all just say "Because I did the assignment earlier and it's 47".

Answers

The base 10 representation of the number 142 base 5 as required to be determined in the task content is; 47.

What is the base 10 representation of the number 142 which is to base 5 as required in the task content?

Since, the conversion of numbers from any base to base 10 requires imaginary exponents to represent place value in such number as follows;

142₅ can therefore be written as follows; 1²4¹2⁰₅.

On this note the evaluation is carried out by summing the product of each digits and 5 to the corresponding power as follows;

1²4¹2⁰₅ = (2 × 5⁰) + (4 × 5¹) + (1 × 5²)

= (2 × 1) + (4 × 5) + (1 × 25)

= 2 + 20 + 25.

= 45.

Ultimately, the base 10 representation of the number 142 base 5 as required to be determined in the task content is; 47.

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I really need help with this question can anyone please help me thank you

Answers

Answer:

between 4 and 5

Step-by-step explanation:

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