Question 4multiple choice worth 3 points)
(06.04)
the expression 2(l + w) is used to calculate the perimeter of a rectangle, where i is length and w width if the length is
2 over 5 unit and the width is 1 over 5 unit, what is the perimeter of the rectangle in units?

LENGTH=2/5

WIDTH=1/5

perimeter is 2l+2w

L=So 2/5 + 2/5 is 4/5

W=So 1/5 + 1/5 is 2/5

Answer is 4/5 + 2/5

Answer= 6/5 = 1 1/5

answer: 91

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.