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katrin [286]
3 years ago
14

A sandbag is released from a hot air balloon that is 400 ft above the ground. Using the falling object model, h = −16t^2 + s, wh

ere h = height in feet, t = time in seconds, and s = initial height in feet, how long will it take for the sandbag to hit the ground? A. 4 seconds B. 5 seconds C. 20 seconds D. 25 seconds

Mathematics
1 answer:
Bogdan [553]3 years ago
7 0

Answer:

  B. 5 seconds

Step-by-step explanation:

A graphing calculator shows the answer easily.

__

h(t) = 0 = -16t^2 +400

t = √(400/16) = 5

It will take 5 seconds for the sandbag to hit the ground.

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<u>Question</u>:

Franklin saved money to buy art supplies. He used 1/5 of his savings to buy brushes. He used 1/2 of his savings to buy paint. What fraction of his savings does he have remaining?

Answer:

Franklin had  \frac{3}{10} of his saving left.

Step-by-step explanation:

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Solution:

Let the remaining amount  be x

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x =\frac{10-7}{10}

x =\frac{3}{10}

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I might be wrong but i think its 
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3 years ago
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lianna [129]
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So:

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oksian1 [2.3K]

Answer:

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Step-by-step explanation:

Suppose that A and B are points on the number line.

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Answer:

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Step-by-step explanation:

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