I need help pls really fast fue in 10 minutes

2 B

Step-by-step explanation:

slope is 2

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify