PLEASE HELP 40 POINTS !!!!

Use function notation to write the equation of the line.

The expected value with a sample size of 20 and a probability of 0.25 will be 5.

The anticipated value is an extension of the weighting factor in statistical inference. Informally, the anticipated value is the simple average of a significant number of outcomes of a randomly selected variable that was separately chosen.

The expected value is given below.

E(x) = np

Where n is the number of samples and p is the probability.

If x is a binomial random variable with n = 20 and p = 0.25. Then the expected value is given below.

E(x) = 20 x 0.25

E(x) = 5

The expected value with n = 20 and p = 0.25 will be 5.

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2nm = 2e-7 cm or written out 0.0000002 cm

To convert nm to cm, you have to divide the value by 1e+7 (10000000).

If the equation 8x+7y=6 is a true equation, then  the value of the equation 5+8x+7y is 11

Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

The equation is given as

8x + 7y = 6

The above equation is said to be true

The next step is to add 5 to both sides of the equation 8x + 7y = 6

So, we have

5 + 8x + 7y = 6 + 5

Evaluate the sum of the like terms

So, we have

5 + 8x + 7y = 11

Hence, if the equation 8x+7y=6 is a true equation, then  the value of the equation 5+8x+7y is 11

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The standard deviation of the response time is 1.2755 minutes.

Based on the information, the response times for a certain ambulance company are normally distributed with a mean of 12.5 minutes. Ninety-five percent of the response times are between 10 and 15 minutes.

The standard deviation of the response time will be illustrated thus:

It should be noted that the area under the one tailed standard normal curve is given as:

P(0 <= Z <= 1.96) = 0.475

The standards deviation will be:

= 2.5 / 1.96

= 1.2755

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The response times for a certain ambulance company are normally distributed with a mean of 12.5 minutes. Ninety-five percent of the response times are between 10 and 15 minutes. What is the standard deviation of the response time?

The simplest form of the expression [tex]\frac{5+\sqrt{3} }{2-\sqrt{3} }[/tex] is [tex]13+7\sqrt{3}[/tex].

The simplest form of a fraction is one with a reasonably prime denominator and numerator. It indicates that, except for 1, there is no common factor between the fraction's numerator (upper portion or top) and denominator (lower part or bottom).

In elementary algebra, the procedure of rationalization is performed to get rid of the irrational number in the denominator. There are several methods for rationalizing the denominator.

An expression comprises a variable, a number, or a combination of a number, a variable, and operation symbols. An equation is created by joining two expressions with an equal sign.

Consider the expression,

[tex]\frac{5+\sqrt{3} }{2-\sqrt{3} }[/tex]

Rationalizing the denominator,

[tex]\frac{5+\sqrt{3} }{2-\sqrt{3} } = \frac{5+\sqrt{3} }{2-\sqrt{3} } \times \frac{2+\sqrt{3} }{2+\sqrt{3}}[/tex]

[tex]\frac{5+\sqrt{3}}{2-\sqrt{3}} =\frac{(5+\sqrt{3})(2+\sqrt{3})}{(2-\sqrt{3})(2+\sqrt{3})}[/tex]

Using the identity,

( a + b )( a - b ) = a² - b²

Therefore,

[tex]\frac{5+\sqrt{3}}{2-\sqrt{3}} =\frac{5 \times 2 + 5 \times \sqrt{3} + \sqrt{3} \times 2 + (\sqrt{3} )^{2}}{(2)^{2}-(\sqrt{3} )^{2}}[/tex]

[tex]\frac{5+\sqrt{3}}{2-\sqrt{3}} = \frac{10+7\sqrt{3}+3}{4-3}[/tex]

[tex]\frac{5+\sqrt{3}}{2-\sqrt{3}} = \frac{13+7\sqrt{3}}{1}[/tex]

[tex]\frac{5+\sqrt{3}}{2-\sqrt{3}} = 13+7\sqrt{3}[/tex]

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The value of m<1 is 65 degrees

From the diagram shown, we have that;

It is important to note that angles on a straight line sum up to 180 degrees

Also, corresponding angles are equal

Then, we have that;

m<2 + m<3 = 180°

Substitute the values

9x + 7 + 5x + 5 = 180

collect like terms

14x = 180 - 12

14x = 168

Make 'x' the subject

x = 168/ 14

x = 12

We have that;

m<3 = 5x + 5 = 5(12) + 5 = 60 + 5 = 65

But m<3 = m<1

m<1 = 65

Thus, the value of m<1 is 65 degrees

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The best there terms of the sequence will be:

a. 10, 16

b. 211, 311

c. 10 , 12.5

d. -13, -22

It should be noted that in an arithmetic sequence, there is a constant difference, which is the difference between a term and the previous term.

We find the constant difference for each sequence, and we add it to the second term to find the third term. Then we add the constant difference to the third term to find the fourth term.

a. 4 - (-2) = 6

3rd term: 4 + 6 = 10

4th term: 10 + 6 = 16

b. 111 - 11 = 100

3rd term: 111 + 100 = 211

4th term: 211 + 100 = 311

c. 7.5 - 5 = 2.5

3rd term: 7.5 + 2.5 = 10

4th term: 10 + 2.5 = 12.5

d. -4 - 5 = -9

3rd term: -4 + (-9) = -13

4th term: -13 + (-9) = -22

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Here are the first two terms of some different arithmetic sequences:

a. -2,4

b. 11, 111

C. 5, 7.5

d. 5,-4

What are the next three terms of each sequence?

Step-by-step explanation:

ED || AB

E is the midpoint of AC.

therefore, D is the midpoint of BC, and AB is 2×ED.

but also the height of ABC is 2×height of EDC.

now, we know, the area of a triangle is

baseline × height / 2

area EDC = baseline × height / 2 = 18 cm²

area ABC = 2×baseline × 2×height /2 =

= 4 × (baseline × height / 2) =

= 4 × area EDC = 4 × 18 = 72 cm²

the area of ABDE = area ABC - area EDC =

= 72 - 18 = 54 cm²

Answer:

-3.625 < -3.62

Step-by-step explanation:

Answer:

112

Step-by-step explanation:

Find the lowest common multiple of 14 and 16.

To find the lowest common multiple:

1) Break the numbers down into their prime factors.

14 = [tex]2^{1}[/tex] x [tex]7^{1}[/tex]

16 = 2 x 8 = 2 x 2 x 4 = 2 x 2 x 2 x 2 =  [tex]2^{4}[/tex]

2) Multiply the highest power of each prime number.

We have three numbers, but only two are unique:  [tex]2^{1}[/tex] , [tex]7^{1}[/tex] and  [tex]2^{4}[/tex]

  [tex]2^{4}[/tex] >  [tex]2^{1}[/tex] , so we will use  [tex]2^{4}[/tex]

[tex]7^{1}[/tex] x  [tex]2^{4}[/tex] = 7 x 16 = 112

x = 4 is an extraneous solution.

√(5-x) -√x=1

√(5-x) = 1 + √x

Squaring both sides of the equations, we get

(√(5-x))² = (1 + √x)²

5 - x = 1 + x + 2√x

4 - 2x = 2√x

Squaring again both sides of the equations, we get

(4 - 2x)² = (2√x)²

16 + 4x² - 16x = 4x

4x² - 20x + 16 = 0         ...(1)

By middle term splitting equation (1) can be written as

4x² - 16x - 4x + 16 = 0  

4x(x - 4) -4(x - 4) = 0  

(x - 4) (4x - 4) = 0

4x - 4 = 0 and x - 4 = 0

x = 1 and 4

Check for Extraneous solution by putting value of x in the original equation -

Let x = 1

√(5-1) -√1=1

√4 - 1 = 1

2 -1 = 1

1 = 1

Since, LHS = RHS, so, x = 1 is not an extraneous solution

Let x = 4

√(5-4) -√4=1

√1 - 2 = 1

1 - 2 = 0

-1 = 0

which is a contradiction, so, x = 4 is an extraneous solution.

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The greatest number of groups Evelyn can place her stuffed animals into

= 6 Groups.

We have been given that

Evelyn should donate her collection of stuffed animals in which

No. of stuffed cats = 18

No. of stuffed dogs = 12.

We have to find out  number of groups with no stuffed animals left over.

for solving this question we can use GCF

What is GCF (Greatest Common Factor)?

The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share.

How can we find GCF?

The greatest common factor is the greatest factor that divides both numbers. To find the greatest common factor, first list the prime factors of each number.

18 and 12 share one 2 and one 3 in common. We multiply them to get the GCF, so 2 * 3 = 6 is the GCF of 18 and 12.

The common factors of 12 and 18 are 1, 2, 3 and 6. The greatest common factor of them is 6.

In each groups no. of cats and dogs are (3cats , 2 dogs)

Hence , 6 is the greatest number of groups Evelyn can place her stuffed animals into.

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The expressions that can be used to find the total profit in tokens that Marcelo made is (7 × 6) - (3 × 7) and 42 - 21.

From the information, Marcelo plays a carnival game six times he spent three tokens to play each game and he won 7 tokens each game.

The appropriate expression will be:

= (7 × 6) - (3 × 7)

= 42 - 21

= 21

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Answer: Papst blue ribbon

Step-by-step explanation:

Ryan lives in a trailer park. He likes to drink papst blue ribbon and not wear satin robes.

The rational numbers ordered from smallest to largest are given as follows:

-3², -3, sqrt(3), 4, 5, 2³.

Rational numbers are numbers that can be represented by fractions, such as integers and terminating or repeating decimals.

They are ordered as follows:

negative infinity, ..., -5, ..., -3, ..., 0, ..., 3, ..., 5, ..., positive infinity.

That is, large negative are the smallest, and large positives are the greatest.

For this problem, the numbers are given as follows:

Hence the ordering, from least to greatest, of the numbers is given as follows:

-3², -3, sqrt(3), 4, 5, 2³.

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Since the difference between consecutive terms is the same, the sequence is an arithmetic sequence, hence Mai is correct.

The sequence is missing, and has these following information:

We also have that:

In an arithmetic sequence, the difference between consecutive terms is always the same, called common difference d.

The nth term of an arithmetic sequence is given by:

[tex]a_n = a_1 + (n - 1)d[/tex]

From the values os the function, we have that:

The rate of change is the same, hence sequence is an arithmetic sequence, and Mai is correct.

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Answer:

10m + 100 = 15m

20 movies

Step-by-step explanation:

Hello!

Let the number of movies watched be m.

The equation for the first movie club would be 10m + 100, as you pay 10 dollars per movie (10*m) and you add the original membership fee (100).

The equation for the second movie club is 15m, 15 dollars per movie. Set the equations equal to each other and solve for m, the number of movies, so the price would be equal.

Therefore, you would need to watch 20 movies in each movie club for the total price to be equal.

The gradient of line B is (-1).

The gradient of a line is used to calculate the steepness of a line and determines how much it is inclined with reference to the x-axis. To calculate the gradient of any line, the x and y coordinates of a line are used. In other words, it is the ratio of the change in the y-axis to the change in the x-axis.

The gradient is the measure of the steepness of a straight line.

Given:

coordinates taken from line B is (5, 0) and (-2, 7)

we have [tex]y_2[/tex]= 7, [tex]y_1[/tex]= 0, [tex]x_1[/tex]= 5, [tex]x_2[/tex] =-2

now, substituting the values then,

The gradient is

=[tex]( y_2- y_1)/ (x_2 - x_1)[/tex]

=(7-0) / (-2 - 5)

=7 /(-7)

=-1

Hence, the gradient is -1

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The expression of the length of one of the sides of the window is √114

The area of a shape is the amount of space on the shape

The area of the window is given as

Area = 114 square feet

The shape of the window is a square

The area of a square is calculated as

Area = Length^2

So, we have

114 = Length^2

Take the square root of both sides

Length = √114

Hence, the expression of the length of one of the sides of the window is √114

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The length of the side RS in triangle RST as required to be determined in the task content is; 12 units.

The distance between two points defined by pairs of coordinates on the Cartesian plane can be determined by a modification of the Pythagoras theorem.

Hence, the distance between two points A(x₁, y₁) and B(x₂, y₂) on the coordinate plane is:

AB= √{(y₂ - y₁)² + (x₂ - x₁)²}

Given that the vertices R and S of the triangle is at R(−3,3), S(-3,-9), hence:

RS= {( -9-3 )² + ( -3-(-3))² } = 12 units.

The length of the side RS in triangle RST is 12 units.

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Answer:6

Step-by-step explanation:

when x is -1 y is 6. input -1 as x in the equation and solve, otherwise graph.

The result of simplifying the number 32¹.² using the exponent rules is 1024

To solve this exercise we have to resolve algebraic operations following the exponent rules.

Note the power of a power rule that indicates that: the exponent result will be the multiplication of these exponents, we have:

(32¹)²

32⁽¹*²⁾ =

32² =

32 * 32 =

1024

In mathematics an exponent is the number of time that a number, called (base) is multiplied by itself. It is also called, power or index.

Example: 3² = 3*3 = 9

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Two parallel lines have equal slope.

Therefore, slope of line y = -2/9x + 6 is equal to the slope of the line joining the points (3,2).

Slope of line is given by :

m= -[(coefficient of x) / (coefficient of y)]

Where m= slope,

Slope of line y = -2/9x + 6

2/9x + y = 6

(m1) slope of equation g = -x/y

                                     = -(2/9)/1

                                     = -2/9

Since equation h is parallel to g

So, m1=m2

That is slope of equation h=slope of equation g

We know,

Equation of the line h having slope=m2= -2/9

passing through the slope of the point (3,2) is,

       y-y1=m(x-x1)

Replace with values x1,y1=(3,2) and m=-2/9

      y-2=(-2/9)(x-3)

We can solve it :      

       9y-18=-2x+6

       2x+9y=6+18

       2x+9y=24

       2x+9y-24=0

Hence,

     2x+9y-24=0 is the equation of h.

Therefore,

Line g has an equation of y = -2/9x + 6. Parallel to line g is line h, which passes through the point (3, 2), then the numbers in the equation of line h is 2x+9y-24=0

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Answer:

the answer is false

Step-by-step explanation:

this is an example: 22+1=23  23 is not an even number

Answer:

B. False

Step-by-step explanation:

Let the even number be x_e and odd be x_o

[tex]{ \tt{ = x _{e} + 1}}[/tex]

Assume the range is 2 ≤ x ≤ 4

[tex]{ \tt{x _{2} = 2 + 1}} \\ { \tt{x_{2} = 3 \: (odd)}}[/tex]

[tex]{ \tt{ x_{4} = 4 + 1}} \\{ \tt{x _{4} = 5 \: (odd)}}[/tex]

Therefore:

[tex]{ \tt{x _{n + 1} = x _{e} + n \: \: gives \: odd}}[/tex]

Hence;

[tex]{ \tt{ x_{e} + 1 = x _{o} }}[/tex]

In linear equation , the car y's price changes the most.

What are a definition and an example of a linear equation?

According to the question

a)  Car x : £ 10320  ≈  £ 10300        10320 - 10300 = 20

    Car y  : £ 15430 ≈ £ 15400          15430 - 15400 = 30

    Car z   :  £ 17490 ≈  £ 17500        17490 - 17500  = 10

                   10 < 20 < 30

so the car y's price changes the most.

b) this car's price change £ 30

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The solution of the system of equation by elimination method is (-3, 3)

The system of equation can be solved using substitution, elimination and graphical method.

But we are asked to use elimination method.

Therefore,

2x + 6y = 12

2x - 3y=  - 15

Subtract equation(i) from equation(ii)

Therefore,

6y - (-3y) = 12 - (-15)

6y + 3y = 12 + 15

9y = 27

y = 27 / 9

y = 3

Therefore,

2x - 3y =  - 15

2x - 3(3) = - 15

2x - 9 = - 15

2x  = - 15 + 9

2x  = -6

divide both sides by 2

x = - 6 / 2

x = -3

Therefore, the solution of the system of equation by elimination method is (-3, 3)

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Answer:

0.119

Step-by-step explanation:

Based on the concept of conditional probability, the probability that the first iPod is defective and the others are not defective is approximately 0.1842

Conditional Probability is a term that is used to describe the chances that some outcome occurs given that another event has also occurred.

Generally, the functional probability is often stated as the probability of B given A and is written as P(B|A), where the probability of B depends on that of A happening

In this case, to find the answer we break down the problem step by step:

Step 1: Find the probability that the first iPod is defective.

Since there are 3 defective iPods out of 20 total the probability of selecting a defective iPod on the first draw is 3/20.

Step 2: Find the probability that the second and third iPods are not defective.

After selecting a defective iPod there are 19 remaining iPods in the box out of which 17 are not defective.

Hence, the probability of selecting a non-defective iPod on the second draw is 17/19.

Also, given that the probability of selecting a non-defective iPod on the third draw (assuming the previous two iPods were not defective) is 16/18.

Step 3: Finding the overall probability.

The overall probability of the first iPod being defective and the second and third iPods being non-defective can be computed by multiplying the probabilities of each step:

Probability = (3/20) * (17/19) * (16/18)

= (51/380) * (16/18)

= 0.1842105

Therefore, in this case, it is concluded that the correct answer is approximately 0.1842 or 18.42%.

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log₄x²y³ = log x² + log y² is solution of this logarithmic function.

What is an example of a logarithmic function?

What distinguishes exponential from logarithmic growth?

we use property [ log ( mn) = log +  log n ] in equation -

log₄x²y³ = log x² + log y²

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The inequality is: 14.2 + 14.2 + x < 51.3

x < 22.9

We are given the following:

Perimeter of the triangle < 51.3 in.

The sides are 14.2 in., x in., and 14.2 in.

Therefore, we would have the following inequality:

14.2 + 14.2 + x < 51.3

Solve for x

28.4 + x < 51.3

x < 51.3 - 28.4

x < 22.9

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