Yoku is putting on sunscreen. he uses 2 ml to cover 50 cm of his skin. he wants to know how many milliliters of sunscreen (c) he needs to cover 325 cm of his skin.

13 milliliters he has to use to cover 325 cm of his skin

Step-by-step explanation:

2/50 cm=x/325 cm

2*325=650

650=50x

x=13

each side has a different length.  

step-by-step explanation:

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.