Answer:
70
Step-by-step explanation:
You add all the numbers together and then divided by the number of numbers so
90+80+60+50=
280 divided by 4 is 70
Answer:
The value of 4p - 2 is 30
Step-by-step explanation:
If you multiply 4* 8 you get 32
32 - 2 = 30
Answer:

multiply either sides by 3:

divide either sides by πr² :

Answer:
Step-by-step explanation:
12*6.5%=0.72
12+15%=13.8
0.72+13.8=14.52