Answer:
B, 7/20
Step-by-step explanation:
If two events are mutually exclusive that means that there is no intersection
so in the union formula: AUB=A+B-A∩B
A∩B=0
we can write P(a)=x
7/10=7/20+x+0
7/10-7/20=x
x=7/20
The formula is pi times the radius squared (A = π r²).
So it might be 78.53
Answer:
C - The type of salt and the amount of water are controls, and the amount of salt and the density are variables.
Step-by-step explanation:
"Z" would equal 8. 7 X 8 = 56
