Answer:
Option A
Step-by-step explanation:
Given expression = 
Lets multiply both numerator and denominator by -1.


Hence , Option A is the correct answer.
Answer:
C | 1/5
Step-by-step explanation:
There are 5 20s in 100. Meaning if you only have one 20, it'd be 1/5.
Step-by-step explanation:
5 ppl 5 walls 52 mins *2
10 ppl 10 walls 104 mins *2
20 ppl 20 walls 208 mins
as I know
2.25x+8y=100 is the answer to part a
Answer:
6
Step-by-step explanation:
The variable on the summation sign indicates the number of terms
n goes from 1 to 6
There are 6 terms in the series