1. 9.03 x 80=
2. 0.54 x 24=
3. 33.05 x 200=
4. 0.79 x 51=

1. 722.4

2. 12.96

3. 6610

4. 40.29

Step-by-step explanation:

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1. 722.4

2. 12.96

3. 6610

4. 3.95

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

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.