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3 years ago

Pls answer this question q2 only

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

8 0

Answer:

this is your answer.......

Step-by-step explanation:

please mark me as the brainlliest

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Need help fast!!! <br> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

earnstyle [38]

Use the subusitution method for r

g(4)=25-3(4)

g(4)= 25-12

g(4)= 13

Answer is g(4)= 13

8 0

3 years ago

Read 2 more answers

Please help If AC =12 then BE=

Blizzard [7]

Half the distance of AC (6)

4 0

3 years ago

Read 2 more answers

A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of

disa [49]

Answer:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

Step-by-step explanation:

For this case we assume the following probability distribution:

X 5 6 7 8 9 10

P(X) 0.05 0.15 0.33 0.28 0.12 0.07

First we need to find the expected value (first moment) and the second moment in order to find the variance and then the standard deviation.

In order to calculate the expected value we can use the following formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

In order to find the standard deviation we need to find first the second moment, given by :

$E(X^2)=\sum_{i=1}^n X^2_i P(X_i)$

And using the formula we got:

$E(X^2)=(5^2 *0.05)+(6^2 *0.15)+(7^2 *0.33)+(8^2 *0.28)+ (9^2 *0.12 +(10^2 *0.07))=57.46$

Then we can find the variance with the following formula:

$Var(X)=E(X^2)-[E(X)]^2 =57.46-(7.48)^2 =1.5096$

And then the standard deviation would be given by:

$Sd(X)=\sqrt{Var(X)}=\sqrt{1.5096}=1.229$

5 0

4 years ago

Read 2 more answers

4. Mrs. Holder gave each team of 4 students 9 packs of paper to split evenly. How many packs of paper did each team member get?

Rudiy27

Option c is the correct answer

9/4=2 1/4

8 0

4 years ago

Which of the following pairs is a solution to the following system of equations: - x + 3y = 9 2x + 5y = 4 A. (- 15, - 2) B. (- 1

vivado [14]

Answer: x = -3 y = 2 So (-3,2)

Step-by-step explanation:

- x + 3y = 9 Multiply everything by 2 then add to the second equation.

2x + 5y = 4

<u>-2x +6y =18 </u> then 2x-2x=0 Add the other terms and solve for y.

11y = 22 divide both sides by 11 yo get y = 2 Substitute that into either one and solve for x.

2x + 5y = 4

2x + 5(2) = 4

2x + 10 = 4 subtract 10 from both sides 2x = 4 -10

2x = -6 so divide both sides by 2 to get x = -3

4 0

3 years ago