Answer:
The last one looks correct
Step-by-step explanation:
Because if they have stronger winds then that would improve their flight making them get use to it, and will for sure get stronger over time
(70 -100)/15 = -2 . . . . the z-score of a score of 70
p(z < -2) ≈ 2.3%
A score of 70 would place you in approximately the 2nd percentile.
Answer:
is there more to the question?
The large hose fills 1 pool in 9 hours written as 1/9
The small hose fills 1 pool in 18 hours, written as 1/18
Now you have 1/9 + 1/18 = 1/x ( x is the unknown time for both hoses).
rewrite 1/9 with a common denominator as 1/18:
1/9 = 2/18
Now you have 2/18 + 1/18 = 1/x
Add the left side:
2/18 + 1/18 = 3/18
Now you have 3/18 = 1/x
Cross Multiply:
3x = 18
Divide both sides by 3"
x = 18/3
X = 6
It will take both hoses 6 hours.
Answer:
Radius= 2r
Step-by-step explanation:
Surface area of hemisphere
=2 x 22/7 x (2r)^2
=44/7 x 4 r^2
=174/7 r^2
=25.14 r^2
