The mean number of total miles ran last week by each member on the track team was 4 with a standard deviation of 1.2. If Clay’s z-score was 2.5, how many miles did he run?

He ran 1.25 miles.

Step-by-step explanation:

Given,

Clay’s z-score (x) = 2.5

Mean (μ) = 4

Standard deviation (σ) =  1.2

To find the distance he ran.

Formula

By Z score formula

Z = mod of ((x-μ)÷σ) [ mod of means the positive value]

Now,

Putting the values of x,μ,σ we get,

Z = mod of ( )

= 1.25

Hence,

He ran 1.25 miles.

3/6   and 9/18

step-by-step explanation:

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3