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storchak [24]
3 years ago
10

How to do number 13 and 14

Mathematics
1 answer:
Murrr4er [49]3 years ago
7 0

From the information: v is 64 while c is 5

Differentiate the new equation h=-16t^{2} + 64t + 5 to get \frac{dh}{dt}= -32t + 64.

no 13). At maximum height this derivative equals zero so: -32t + 64 = 0;  -32t = -64; t=2.Hence ans is 2 secs

no 14). put t as 2 sec in the equation: h=-16t^{2} + 64t + 5.  This gives

h=-16( 2^{2}) + 64(2) + 5; h=-64+128+5=69. Hence h is 69ft

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3. A plane travels at a constant speed. It takes 6 hours to travel 3,360 miles. (20 points)
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In order to find the planes speed in mph, some simple arithmetic must be done and you should divide 3,360 by 6.   Now that you have determined that 3,360/6 equals 560, you know that in order to figure out how many miles the plane can travel in 10 hours, all you must do is multiply 560 by 10 which equals 5,600.

7 0
3 years ago
How do i solve this?
shusha [124]

Answer:

Step-by-step explanation:

You can use Pythagoras Theorem,

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∴ y = 8\sqrt{5}

Hope that helps!!

Please mark as Brainliest!!

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2 years ago
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2 years ago
Read 2 more answers
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