Answer:
b=-a
Step-by-step explanation:
we know that b is located the same distance from 0 as another number, a, but in the opposite direction.
so the sum of the two numbers equal zero
a+b=0
a=-b or b=-a
Answer:

Step-by-step explanation:

30 is the answer
i can help if need be
Answer:
9
Step-by-step explanation:
3 times the sum of 4 and 2 = 3*(4+2)
= 3 * 6
= 18
18 - 9 = 9
Answer:
see below PLEASE GIVE BRAINLIEST
Step-by-step explanation:
549 - 36.5 = 512.5mb were trf
512.5/125 = 4.1mb per second