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mr_godi [17]
3 years ago
14

Question 3 of 10

Advanced Placement (AP)
1 answer:
Drupady [299]3 years ago
8 0

Answer:

C: Speaker 1

Explanation:

Hope this helps:)

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Answer: 3:12 pm (C.)

Explanation:

The 4 train from battery park to e 161st is 35 minutes. However, it takes a few minutes to walk from the 161st stop to the stadium, so you would need to budget in extra time (so 3:22 would be too late even though it gets in before 4:00 pm). The best train would be the 3:12 because it would get in at 3:47, giving you plenty of time to walk from the station to the stadium.

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Always include a citation when you use facts or statistics in a document. true or false
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Eczema is a condition often seen in young children who also have _____ :
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A ball is thrown into the air at a velocity of 44 feet per second. Its height in feet, h after t seconds is represented by the e
Lady_Fox [76]

Answer:

0.447 sec

Explanation:

velocity = distance/ time

distance 'h' is a function of time 't' given by

h = 12t^{2} + 44t + 16

⇒ differentiating equation

⇒ velocity = \frac{dh}{dt} = 24t + 44

⇒ acceleration = \frac{d^{2}h }{dt^{2} } = 24 \frac{ft}{sec^{2} }

deceleration due to gravity = -9.8 m/sec^{2} =  - 9.8 x 3.281 = - 32.154 ft/ sec^{2}

Net deceleration = 24 - 32.154 = - 8.15 ft/ sec^{2}

at maximum height v = 0

v^{2} = u^{2} + 2ah

⇒  0 = 44^{2} + 2 (-8.15)h

⇒ h = 118.72 ft⇒

118.72 = 12t^{2} + 44t + 16

⇒ 12t^{2} +44t - 102.72 = 0

⇒  t = -44 ± \sqrt{44^{2} - 4(12)(102.72) }     / (2 x 12)

t = 0.447 sec

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Read 2 more answers
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