Answer:
7.591 x 10^10
Step-by-step explanation:
You have to move the decimal point over until you have a number under 10 and also the number of times you had to move the decimal point at the end of the number over is your exponent for 10
D since (-5 x -5) = 25 and (7 x -8) = -56. Add 25 and -56 and your answer is D. -31
13 N in the direction you are pushing it.
20 N------>
<---7 N
=
13 N---->
18. -4, 4
19. -38, 38
20. -260, 260
21. -4092, 4092.
I might be wrong but...