I'm assuming you're trying to find H so this is how you start:
first solve what [<span>-16.1(15)^2+150] is
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<span>-16.1 (15)^2 + 150
-16.1 x 225 + 150 =
-3622.5 + 150 =
-3472.5 = H(15)
now you divide -3472.5 by 15 to get H
-3472.5 / 15 =
-231.5 = H
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75/15=90/x
75x=90*15
75x=1350
x=1350/75
x=18
she needed to study 18 hrs to get a 90
The answer is 40 is 80% of 50
Answer:
I believe the answer is C
if you do 4 divided by 12 and you multiply it by 1000 you will get 333