Answer:
20
Step-by-step explanation:
you've got to do the inside parenthesis first then multiple with 3 and finally add 8
Answer:
A=a+b
2h=20+8
2·20.4≈285.6
Step-by-step explanation:
B and C is the answer if you look at them closely.
Answer:
n+11=15
-11 -11
n=4
Step-by-step explanation:
subtract 11 from both sides