In a class of 32 students, the mean height of the 14 boys is 1.56 meters, the mean height of all 32 students is 1.515. Work out the mean height of the girls

I'm not sure but I did do it on a calculator so 1.515-1.56= -0.045

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.

answer: what statements

step-by-step explanation if you write the statements down then i could you.