2 years ago

Can someone help please

Advanced Placement (AP)

1 answer:

DiKsa [7]2 years ago

4 0

Answer: B is the answer

Explanation: as there is no certain cost for food eaten as it depends from place to place.

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This could mean...
1) Do what your heart desires, if your heart wants to do something, do it.

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Match each word or phrase to its correct definition.

quester [9]

Answer:

N/A

Explanation:

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Students were measuring distances and found one to be 2.04 m. When they asked the teacher if their measurement was correct, the

IgorLugansk [536]

Answer:

The percentage error is 5.56%

Explanation:

Given

$Measured (M) = 2.04m$

$Actual (A)= 2.16m$

Required

Determine the percentage error

Percentage error (P) is calculated as follows:

$P = \frac{|A - M|}{A} * 100\%$

$P = \frac{|2.16 - 2.04|}{2.16} * 100\%$

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$P = \frac{0.12}{2.16} * 100\%$

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2 years ago

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 = 12 $t^{2}$ + 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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3 years ago