For what values of t are the following expressions undefined?
(10-t)/(t-7)
10/(3t-15)

Answers

Answer 1

Answer:

7, 5

Step-by-step explanation:

Change the denominator to make the end result 0. Anything with a 0 denominator results in it being undefined.

Answer 2

The expression (10-t)/(t-7) is undefined when t=7.

The expression 10/(3t-15) is undefined when t=5.

To find the values of t for which the expressions are undefined, we need to look for any values of t that make the denominators equal to zero.

we know that dividing by zero is undefined.

For the expression (10-t)/(t-7),  the denominator is t-7.

So, this expression is undefined when t-7=0

To find the value of t that makes t−7=0, solve the equation:

t-7=0

t=7

So, the expression (10-t)/(t-7) is undefined when t=7.

For the expression 10/(3t-15), the denominator is t-7.

So, this expression is undefined when 3t-15=0

To find the value of t that makes 3t-15=0, solve the equation:

3t-15=0

Add 15 on both sides:

3t=15

Divide both sides by 3:

t=5

So, the expression 10/(3t-15) is undefined when t=5.

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Related Questions

given ij = 3x +3 HI = 3x-1 hj=3x+8 determine the numerical length of hj

Answers

if the point I is between points H and J, then the numerical length of hj is 14 units

How to determine the numerical length of hj?

The given parameters are

IJ= 3x + 3

HI = 3x - 1

HJ = 3x  + 8

The above implies that the point I is between points H and J

So, we have

HJ = HI + IJ

Substitute the known values

3x + 8 = 3x + 3 + 3x - 1

Evaluate the like terms

3x = 6

Divide by 3

x = 2

Substitute x = 2 in HJ = 3x  + 8

HJ = 3 x 2 + 8

Evaluate

HJ = 14

Hence, the numerical length of hj is 14 units

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Please help im stuck

Answers

The slope of the line is 1 / 3

How to find the slope of a line?

The slope of a line is a measure of its steepness.

The slope of the line is the ratio of the rise to the run, or rise divided by the run.

Mathematically, the slope of a line can be described as follows;

slope = change in y / change in x

Therefore,

slope = y₂ - y₁ / x₂ - x₁

Let's take two points from the graph

(0, 2)(3, 3)

where

x₁ = 0

x₂ = 3

y₁ = 2

y₂ = 3

Hence,

slope = 3 - 2 / 3 - 0

slope = 1 / 3

Therefore, the slope of the line is 1 / 3

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What is the solution of each exponential equation? Check your answer.

b. 5.2³x=400

Answers

Solution of exponential equation is ,  x = 10

What is exponential equation ?

In, mathematics a exponential equation or exponential function is inverse of logarithmic function. That means, we can easily convert the logarithmic function into exponential function and vice versa. The basic form of the logarithm function can be written as  [tex]a^x[/tex] .

where, a is the base of function

           x defines  expression

Mathematically, if  [tex]log_aN = x[/tex] is an logarithmic function then, this can be converted to exponential function as  [tex]a^x = N[/tex].

There are many formulas that are given to us for solving several simple and complex problems based on exponential functions and exponential equations.

Some important formulas of exponential :

[tex]a^x . a^y = a^{x+y}[/tex][tex]\frac{a^x}{a^y} = a^{x-y}[/tex][tex]a^x.b^x=(ab)^x[/tex][tex](a^x)^y = a^{xy}[/tex][tex]a^{-x} = \frac{1}{a^x}[/tex]

According to given statement,

5.2³ x =400

=> 5.8 x =400

=> 40x = 400

=> x =10

Thus solution for this equation is x =10.

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The complete question is :

What is the solution of each exponential equation? Check your answer.

a. 7⁻⁴x=800

b. 5.2³x=400

What is the least common denominator (LCD) of 1/10 and 1/6?

Answers

Answer:

LCD = 30

Equivalent Fractions with the LCD

1/10 = 3/30

1/6 = 5/30

Step-by-step explanation:

Rewriting input as fractions if necessary:

1/10, 1/6

For the denominators (10, 6) the least common multiple (LCM) is 30.

LCM(10, 6)

Therefore, the least common denominator (LCD) is 30.

Calculations to rewrite the original inputs as equivalent fractions with the LCD:

1/10 = 1/10 × 3/3 = 3/30

1/6 = 1/6 × 5/5 = 5/30

Add one pair of parentheses or square
brackets to the left side of each equation to
make a true statement.
a) 3.5 x 4.1 3.5 2.8 = -0.7
b) 2.5+ (-4.1) + (−2.3) × (-1.1) = 4.29
c) -5.5 (-6.5) ÷ 2.4+ (-1.1) = -0.5

Answers

a. 3.5 x 4.1 (3.5 ×2.8) = -0.7

b.  2.5+ (-4.1) + [(−2.3) × (-1.1)] = 4.29

c. [-5.5 (-6.5) ÷ 2.4]+ (-1.1) = -0.5

Hence the required parentheses are added to make the statement true.

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I need to write the place value of a number. I know how to do that but I don't know how to write it as a fraction. Like "state the place value of 4 in the number 23.45. Write you answer as a fraction"

Answers

Answer:

the answer is 4 hundreds because starting from the decimal point is hundreds

Principal $960 interest rate 9% time in nine months what is the simple interest

Answers

keeping in mind that a year has 12 months, thus 9 months is really 9/12 of a year.

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$960\\ r=rate\to 9\%\to \frac{9}{100}\dotfill &0.09\\ t=years\to \frac{9}{12}\dotfill &\frac{3}{4} \end{cases} \\\\\\ I = (960)(0.09)(\frac{3}{4}) \implies I=64.8[/tex]


You can find the area A of a square whose side is s units with the formula A=s². What. is the best estimate for the side of a square with an area of 32m² ?
(A) 4.2m C) 8.0m (B) 5.7m(D) 16m

Answers

The side of square is (B) 5.7m

We are given the formula relating side and area of square. Using the mentioned formula to find the value of side of square.

Side² = Area

Rewriting the equation according to side of the square -

Side = √Area

Keep the values in formula to find the value of side of square

Side = √32

Finding square root of the number to find the value of side of square

Side = √(8×4)

Side = √(4×2×4)

Side = 4√2

Side = 4×1.414

Performing multiplication  to find the value of side of square

Side = 5.66

Side = 5.7 meters

Hence, the side of square is (B) 5.7m

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lowest common multiple of 18 and 42 x

Answers

Answer:

I'm assuming you inserting the variable x was a mistake.

Step-by-step explanation:

The least common multiple of 18 and 42 is 126.

[tex]\bold{Step-by-step}[/tex]

[tex]\mathrm{"LCM"}[/tex]

[tex]18 \times 7 = 126\\42 \times 3 = 126[/tex]

Any concerns, let me know, have a great day!

you and a friend are making jewelry for your friends. Bracelets cost $2.25 to make and
you spent $21.50 on supplies for necklaces. You only have $45 total to spend on supplies. Can you make bracelets for at least 10 friends? Explain your reasoning and show your work.

Answers

The fact that $45 is enough to make bracelets for 10.44 persons means that the we can make bracelets for 10 friends

What is the total necklace cost function?

The total cost of necklaces that can be made within the total budget of $45 can be modeled using a straight-line equation, which considers the fixed cost of necklace supplies of $21.50 and the total variable cost of supplies, the cost per necklace multiplied by the total number of necklaces possible, defined as x

45=21.50+2.25x

let solve for x to determine whether we can make bracelets for 10 friends

45-21.50=2.25x

23.50=2.25x

x=23.50/2.25

x=10.44

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please help me the question is in the picture ​

Answers

Answer: C, 21

Step-by-step explanation:

A scientist analyzed numerous samples of drinking water for the presence of lead and nickel. One sample is chosen at random. Let L be the event that the sample contains lead. Let N be the event that the sample contains nickel. Which Venn diagram is shaded to represent the event ? a. c, B. D.

Answers

Answer:

A

Step-by-step explanation:

if it is meant literally as stated (lead AND nickel), then the check was only for both to be present.

and then A is the correct answer (L n N : intersection of both sets).

if it would have the typical meaning (we say we check for L and A, but mean inclusive "or" : either L or N or both), then B would be correct.


Simplify each expression. y¹/₂ . y³/₁₀

Answers

Simplify the expression by applying the index rule: a^mx a^n = a^m+n.

y¹/₂ . y³/₁₀

y¹/₂ . y³/₁₀ = y¹/₂ +³/₁₀

¹/₂ +³/₁₀ = 4/5

y¹/₂ +³/₁₀ = y^ 4/5

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I NEED HELP ASAP
Which expressions are polynomials?
Select each correct answer.
(to make it easier j put A,B,C,D. u also have to picc more thn one.)

Answers

All of them should be polynomials.

A nursery owner buys 9 panes of glass to fix some damage to hes greenhouse. The 9 panes cost 25.65 ​$. ​ Unfortunately, he breaks 2 more panes while repairing the damage. What is the cost of another panes of​ glass?
Question content area bottom
Part 1
Another 2 panes of glass cost x ​$

enter your response here.

Answers

Answer:

For 2 more panes of glass it will cost $5.70.  

Step-by-step explanation:

To find the price of each pane of glass you take the total price/ total panes of glass.  

25.65/ 9 = $2.85.

If he wanted one more pane of glass it would be $2.85 but since you asked for two you multiply by 2 and get $5.70.  Hope this helps!

When Mt. St. Helens erupted in 1980, it reduced the elevation of the summit from 9,677 ft to 8,363 ft. By what percentage was the volcano's height reduced?​

Answers

Answer:1314 or 13.14%

Step-by-step explanation:yes


Solve each equation.
log₇343=x

Answers

The value of x for the equation log₇343=x will be 3.

What are the basic properties of logarithmic function?

Logarithmic function properties. You have encountered several characteristics during your study of algebra, including the commutative, associative, and distributive properties.

These characteristics make it easier to simplify a complex statement or equation. With logarithms, the same holds true.

For log₇343=x

It can be expressed in the form of -

343 = 7ˣ

It can be further expressed as -

7³ = 7ˣ

As base is same,

x = 3

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A savings account pays 4.62% annual interest, compounded continuously. After approximately how many years will a principal of $ 500 double?

Answers

After approximately 16 years, the principal amount of $500 double.

What do we mean by compound interest?Compound interest is calculated by multiplying the initial principal amount by one plus the annual interest rate multiplied by the number of compound periods multiplied by one. The total initial loan amount is then deducted from the resulting value. The amount of interest added in each compounding period is determined by the interest rate, compounding period, and account balance. The basic formula is as follows: added interest = (interest rate for one period) × (balance at the beginning of the period).

So, to find out how many years will a principal of $ 500 double:

Let x be the principal amount.

The formula for calculating compound interest is as follows:

A = P(1 + r)^t

The value of r is 0.0462. In the equation, substitute this and x:

2x = x(1 + 0.0462)^t2 = (1.0462)^t (1.0462)^16 = (1.0462)^t t = 16

Therefore, after approximately 16 years, the principal amount of $500 double.

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If Terrence jogged 4380 km how many meters did he jog

Answers

If he jogged 4380 km then he jogged 4,380,000 meters.

8. If mZABC is one degree less than three times mZABD and m2DBC = 47°, find each measure.

Answers

The measured angle ABD=24° and ABC=71°

The figure in the question is either a triangle or a quadrilateral, but this has not been stated. It is possible to solve this regardless of shape. The accompanying graphic shows the two potential shapes and angles.

Now, based on the information provided, we may deduce that line BD divides angle ABC into two parts: Angle ABC is equal to angle ABD plus angle DBC.

Additionally, we know that angle DBC is 47 degrees and angle ABC is 1 degree less than 3 times angle ABD.

Angle ABC Equals 3x-1 if angle ABD is x.

Angle ABC also equals Angle ABD plus Angle DBC.

Changing the values in the equations above 3x-1 = x+47 ⇒ 2x = 48⇒ x = 24

Angle ABD thus equals 24 degree, and angle ABC = 3(24)-1 = 71-1 = 71 degree

∴∠ABD=24° and ∠ABC=71°

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4.

Which inequality describes all the solutions to 11(3 - x) < -2x + 6?
x < -27
x > 3
x < -3
x > 4 1/3

Answers

Inequality is a statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions. x<3 is the inequality describes all the solutions to 11(3 - x) < -2x + 6

What is inequality?

Inequality is a statement of an order relationshipgreater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

The given inequality is 11(3 - x) < -2x + 6

We need to separate the variable x.

11(3 - x) < -2x + 6

33-11x<-2x+6

Let us shift -2x from RHS to LHS and 33 from LHS to RHS

2x-11x<6-33

Divide both sides by -9

-9x<-27

x<3

Therefore the solution to inequality 11(3 - x) < -2x + 6 is x<3.

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0.625(x+10) -10 =x SOLVE

Answers

You can see the steps and the answer
0.625x+6.25-10
0.625x-3.75

If mWVY = 70, find mYVX.

Answers

Two or more expressions with equal sign is called as Equation. If mWVY = 70 is an angle then mYVX =165 we get by solving the equation x-13=70.

What is equation?

Two or more expressions with equal sign is called as Equation.

mWVY = 70

From the figure we can observe that mWVY =x-13

By this we form an equation

x-13=70

x-13=70

x=70+13

x=83.

So value of x is 83.

Now mYVX=2x-1

2(83)-1

166-1

=165

Therefore mYVX is 165 degree when  mWVY = 70.

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Find each value without using a calculator. If the expression is undefined, write undefined.
sec (-π)

Answers

The value of the expression sec (-π) is equal to -1 if the given expression is undefined.

As given in the question,

Given expression: sec (-π)

Standard position of unit circle: -π is representing semicircle with terminal point on negative x-axis with coordinates (-1, 0)

Hypotenuse = √ (-1)² + 0²

                     = 1

Value of the expression is given by

sec α = Hypotenuse / Base (x-coordinate)

⇒sec(-π) = 1 / -1

⇒sec(-π) = -1

Therefore, the value of the expression sec (-π) is equal to -1.

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Decide whether the following statements are always, sometimes, or never true.If a and b are rational numbers, then the product of (a+√b) and its conjugate is a rational number.

Answers

If a and b are rational numbers, then the product of (a+√b) and its conjugate is always a rational number.

The conjugate of ( a + [tex]\sqrt{b}[/tex] ) is ( a - [tex]\sqrt{b}[/tex] ) .

Product of  ( a + [tex]\sqrt{b}[/tex] ) and ( a - [tex]\sqrt{b}[/tex] )  =  ( a + [tex]\sqrt{b}[/tex] ) * ( a - [tex]\sqrt{b}[/tex] )

                                                         = ( [tex]a^{2}[/tex] ) - a[tex]\sqrt{b}[/tex] + a[tex]\sqrt{b}[/tex] - [ [tex]\sqrt{b} ^{2}[/tex] ]

                                            = ( [tex]a^{2}[/tex]) - b .

The expression ( [tex]a^{2}[/tex]) - b is rational .

Hence , if a and b are rational numbers, then the product of (a+√b) and its conjugate is always a rational number.

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Use natural logarithms to solve each equation.
e ²x=10

Answers

In [tex]e^{2x} =10[/tex] , x = 1., by the properties of logarithm.

What is Logarithm?The opposite of exponentiation is the logarithm.This indicates that the exponent to which a fixed number, base b, must be raised in order to obtain a specific number x, is represented by the logarithm of that number.A number's natural logarithm is its logarithm to the base of the transcendental and irrational number e, which is roughly equivalent to 2.718281828459.

Now,

In [tex]e^{2x} =10[/tex] , taking natural logarithm on both side.

=>  [tex]log_e(e^{2x})=log_e(10)[/tex]

By properties of logarithm, we know that: [tex]log_b(a)^m = m(log_b(a))[/tex]

=> [tex]2x(log_e(e))=ln(10)[/tex]

Also, as [tex]log_e(e)[/tex] = 1,

=> 2x (1) = ln(10)

=> 2x = 2.302 (approx)

=> x = 1.151

Hence, In [tex]e^{2x} =10[/tex] , x = 1.151, by the properties of logarithm.

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PLEASE ANSWER QUESTION IN THE SCREEN SHOT!<3

Answers

Based on the information, it should be noted that there's an increase in percentage of 30%.

How to illustrate the information?

Based on the information, it should be noted that the following can be illustrated:

Original amount = 30

New amount = 39

Therefore, it should be noted that the change in percentage will be:

= Change in amount / Old amount × 100

= (39 - 30) / 30 × 100

= 9/30 × 100

= 30%

Therefore, there's a increase in percentage of 30%.

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The figure below is dilated by a factor of 33 centered at the origin. Plot the resulting image.

Answers

The image of the transformation is R' (-12, 3), S' (-12, 12) and T' (-6, 3)

How to determine the image of the transformation?

The complete question is added as an attachment

The coordinates of the triangle are given as

R = (-4, 1)

S = (-4, 4)

T = (-2, 1)

The transformation is given as

Dilation by a scale factor of 3Centered at the origin

The rule of the transformations is

(x, y) = 3(x, y)

So, we have

R' = 3 * (-4, 1) = (-12, 3)

S' = 3 * (-4, 4) = (-12, 12)

T' = 3 * (-2, 1)= (-6, 3)

Hence, the image of the transformation is R' (-12, 3), S' (-12, 12) and T' (-6, 3)

See attachment for the image of the transformation

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Write an inequality that represents

Answers

Answer:  x  ≤ 4.5

Step-by-step explanation:

Since there is a closed circle on 4.5 and the ray is going left we know that x is ≤ 4.5



b. What are the expressions ⁴√x³} and (⁵√y⁴) in exponential form?

Answers

Exponential Form

We've all heard the term "exponential." What does that word mean? Exponential means growing faster and faster. However, in mathematics, it represents a formula with one or more exponents. So, we know it as exponential form. I would say that things can grow exponentially as the items being talked about get bigger and faster and faster.

So, we use the following method to write the given expression in exponential.

Expression 1 = ⁴√x³

Expression 2 = ⁵√y⁴

Use n*sqrt{a}x=a^(x/n) to rewrite 4*sqrt{x}3 as x^ (3/4)

similarly, we can write the second equation as

Use n*sqrt{a}x=a^(x/n) to rewrite 5*sqrt{y}4 as y^ (4/5)

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