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Georgia [21]
3 years ago
14

Evaluate : 9*1/2please help me i will give you 20 points​

Advanced Placement (AP)
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer: 4.5

Explanation:

9*1/2 = 9/2 = 4.5

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Do you think that Lincoln measures to deal with disloyalty and dissent represented an abuse of power?
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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

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⇒ 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

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⇒ h = 118.72 ft⇒

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

⇒ 12t^{2} +44t - 102.72 = 0

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3 years ago
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