I need help with number 4

9 = x

AR = 25

AM =  40

Step-by-step explanation:

AR + RM = AM

2x+7 +15 = 7x - 23

Combine like terms

2x+22 = 7x -23

Subtract 2x from each side

2x+22 -2x = 7x-2x -23

22 = 5x - 23

Add 23 to each side

22+23 = 5x-23+23

45 = 5x

Divide each side by 5

45/5 = 5x/5

9 = x

AR = 2x+7 = 2*9 +7 = 18+7 = 25

AM = 7x-23 = 7*9 -23 = 63-23 = 40

This Question is incomplete:

If you read the question, you will see that  the options are missing. By Googling  the question, the complete content could  be found here:

https://www.chegg.com/homework-help/questions-and-answers/1-probability-distribution-random-variable--possible-values-random-variable-b-degree-varia-q27898607

The complete question is:

1.) The probability distribution of a random variable is:

a.)the possible values of the random variable.

b.)the degree to which the variable’s possible values are spread out.

c.) the possible values of the random variable and the frequency with which the variable takes each value.

The correct answer is c) the possible values of the random variable and the frequency with which the variable takes each value.

Step-by-step explanation:

The probability distribution for a random variable shows the distribution of the probabilities of the possible value of the random variable. The probability of a random variable can be seen as the possible values of the random variable and the frequency with which the variable takes each value.