Answer:
A. n = 5
Step-by-step explanation:
S = n² + n
When S = 30:
n² + n = 30
Subtract 30 from both sides: n² + n - 30 = 0
Factorize: (n - 5)(n + 6) = 0
Therefore n = 5 or -6
As n > 2, then n = 5 only
Answer:
8m-5
Step-by-step explanation:
Lets write this out in an equation.The plus means addition and the minus means subtraction.
6m+2m-5
Since there is two things with the same variable we can combine them.
8m-5
That is as simple as it gets.
Answer:
4+19W
Step-by-step explanation:
You would just simplify the terms, 13-9=4 and 3W+16W=19W
Answer:
(1) 4 (2) -2
Step-by-step explanation:
