Answer:
x + y = 10
Step-by-step explanation:
The mean is calculated as
mean = , thus
= 5 ( multiply both sides by 6 )
20 + x + y = 30 ( subtract 20 from both sides )
x + y = 10
Answer:
12
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
Plug in -4 for n:
(-4)^2 - (-4) = 16 + 4 = 20
Answer:
I think the answer is the last choice