Answer is -8
why ? Because there’s only a number that’s negative so if one number is negative then the answer is gonna be negative
Answer: Yes 0.56 could be a probability
Explanation:
The value 0.56 is between 0 and 1, which is a key important characteristic of any probability. It's the same as saying 56% is between 0% and 100%; where 0% represents the event not happening and 100% means the event is guaranteed to happen.
9514 1404 393
Answer:
pool radius is 8+4√5 ≈ 16.94 meters
Step-by-step explanation:
Let r represent the radius of the pool. Then r+2 is the radius to the outside of the walkway. The ratio of areas is given as 4/5, so we have ...
πr²/(π(r+2)²) = 4/5
5r² = 4(r² +4r +4) . . . . cross-multiply
r² -16r -16 = 0 . . . . . . . subtract the right-side expression from both sides
__
r² -16r +64 = 80 . . . . . add 80 to complete the square
(r -8)² = 80
r -8 = √80 = 4√5 . . . . square root; use only the positive root
r = 8 +4√5 ≈ 16.94 . . . meters
The radius of the pool is 8+4√5 ≈ 16.94 meters.
_____
The area of a circle of radius r is given by the formula ...
A = πr²
Answer:
m=21
Step-by-step explanation:
34=2m-8
34+8=2m
42=2m
42 / 2=21
m=21
