If you move the decimal point left until it is just to the right of the most-significant digit, the number of places you moved it is the power of ten that your new number is multiplied by.

Then multiplication can proceed in the usual way, taking into account the rules of exponents.

-5+-12 is -17
For lack of a better metaphor, it's like digging a pit deeper than it already is.
Answer:
88 Inches^2
Step-by-step explanation:
Find the areas of one of the triangles and one of the rectangles, add them together, then multiply by 2.
Answer:
Step-by-step explanation:
a = 5b-10
a+b = 26
(5b-10)+b = 26
b = 6
a= 5b + 10 = 40
The answer is going to be 200 because the real answer would be 216.84