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lozanna [386]
2 years ago
14

What is 40 over 100 as tenths in fraction form and decimal form.?

Mathematics
1 answer:
Ostrovityanka [42]2 years ago
7 0
Fraction: \frac{40}{100}= \frac{40:10}{100:10}  = \frac{4}{10}  \\  \\ Decimal: \frac{4}{10}=0.4
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Read 2 more answers
Benjamin threw a rock straight up from a cliff that was 48 ft above the water. If the height of the rock​ h, in​ feet, after t s
fomenos

Answer: It will take 4 seconds  for the rock to hit the​ water.

Step-by-step explanation:

Given : Benjamin threw a rock straight up from a cliff that was 48 ft above the water.

If the height of the rock​ h, in​ feet, after t seconds is given by the equation

h = -16 t^2+ 52 t + 48

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When rock hit the water height becomes zero , i.e. put h = 0 , we get

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Divide equation by 2 , we get

-8t^2+26t+24=0

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t=\dfrac{-26\pm 38}{-16}\\\\ t=-\dfrac{-26+38}{-16}=-0.75\ \ t=\dfrac{-26-38}{-16}=4

Since t cannot be negative , so t= 4

Hence, it will take 4 seconds  for the rock to hit the​ water.

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