11.) a counselor surveys a random sample of 60 out of 900 high school students. 75% of
them said they were going to college. she used these results to determine that 675
students in the overall school would be planning to go to college. do you agree with her
prediction?

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.