Jax bought a package of plastic utensils for a picnic. There are a total of 40 utensils, and 10 of them are knives. What percent of the plastic utensils are knives?

answer: .64

step-by-step explanation

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

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

b, i believe, but not sure.