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3 years ago

Answer the following above

Mathematics

1 answer:

ella [17]3 years ago

5 0

Answer:

true false true

Step-by-step explanation:

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I need help. Say two squirrels are mating in a tree and that tree is 56 feet tall. How many babies would they have if the sun wa

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3 years ago

Is 41/50 closer to 9/11 or 10/11? Verify your answer

BigorU [14]

Answer: No it is closer to 9/11

Step-by-step explanation:

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3 years ago

Read 2 more answers

A weight suspended by a spring vibrates vertically according to the function D D given by D(t)=2sin(4π(t+18)) D ( t ) = 2 sin (

STALIN [3.7K]

Answer:

21.75 cm/s

Step-by-step explanation:

1 cm above central position means D = 1, so we plug in 1 into D(t) and find the time and which this occurs.

$D(t)=2Sin (4\pi(t+18))\\1=2Sin (4\pi(t+18))\\\frac{1}{2}=Sin(4\pi t +72\pi)\\4\pi t + 72 \pi = \frac{\pi}{6}\\4\pi t = \frac{\pi}{6}-72\pi\\t=\frac{\frac{\pi}{6}-72\pi}{4\pi}$

This is the time at which this occurs.

To find instantaneous rate of change, we differentiate D(t) and plug in this t we found. Remembering that d/dt (Sin t) = Cos t

$D(t)=2Sin (4\pi(t+18))\\D(t)=2Sin(4\pi t + 72\pi)\\D'(t)=2Cos(4\pi t + 72\pi)(4\pi)$

Now putting t:

$D'(t)=2Cos(4\pi t + 72\pi)(4\pi)\\D'(\frac{\frac{\pi}{6}-72\pi}{4\pi})=2Cos(4\pi (\frac{\frac{\pi}{6}-72\pi}{4\pi}) + 72\pi)(4\pi)\\=8\pi Cos(\frac{\pi}{6})\\=21.75$

Thus, the instantaneous rate would be around 21.75 cm/s

8 0

3 years ago

Clare earns 75 the next week from an after school job and deposits just enough into her account so that she is out of debt.

CaHeK987 [17]

Answer: As she was in a debt of $50 , she is left with $25

-$50 + $75 = $25

Step-by-step explanation:

3 0

3 years ago

there are 20 ounces of water in a glass. someone drinks 55%of the water. how many ounces of water is left?

dimulka [17.4K]

Given:
20 ounces of water
someone finishes 55% of water
What is left?

20 × 0.55 (55% = $\frac{55}{100}$ = 0.55)
11

20 - 11 = 9
There are 9 ounces of water left

5 0

3 years ago