Solve for x

Answer choices:
4
5
8
3
2

4

Step-by-step explanation:

You need to find XYW

<xYW = <XYZ - <WYZ

<XYW = 128 - 85

<XYW = 43

12x - 5 = 43            Add 5 to both sides

12x = 43 + 5

12x = 48                 Divide by 12

x = 48/12

x = 4

the range is 19

step-by-step explanation:

the range is biggest number minus the smallest, so in this case it would be

41 - 22 = 19

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.