The linear combination method is applied to a system of
equations:
1. (4x+10y = 12)
(10x + 25y = 30) -
2. 2x + 5y = 6
-2x - 5y =-6
31. 0 = 0

$18 was the price of the t-shirt

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.

it will be a cylinder. with a diameter of 8 and 4 single pieces high

step-by-step explanation: