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3 years ago

Which characteristics tell you that this graph shows a proportional relationship? Check all that apply

Mathematics

2 answers:

soldi70 [24.7K]3 years ago

5 0

Answer:

2&4

2: A straight line can be drawn through the points.

4: The line connecting the points passes through the origin.

explanation: got it right

kotegsom [21]3 years ago

4 0

Where is the graph to provide info

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Some doctors recommend that men drink 3 liters of water every day. There are approximately 236.6 milliliters in 1 cup. Which mea

sammy [17]

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Thats a lot of water!

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3 years ago

Sea level is defined as having an elevation of 0 meter. A snailfish is swimming 8,000 meters below sea level. How should the exp

Hitman42 [59]

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I just got the same question and i put The blobfish is 1/7 times as far below sea level as the snailfish. The blobfish is closer to sea level than the snailfish.

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3 years ago

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

Help me please I’m begging worth 40 points!!!!!

ollegr [7]

<h3>I think the answer is (a). </h3>

4 0

3 years ago

Sarah lost 12 pounds over the summer by jogging each week. By winter time, she had gained 4 3/8 pounds. Represent this situation

ANTONII [103]

Assume sarah's weight is m.
first, she lost 12 pounds,
this means that her weight became: m - 12 pounds
then, she gained 4 3/8 pounds, therefore, her current weight is: m-12+4 3/8 pounds
the total change in her weight is:
-12+4 3/8 = -7.625 pounds
the negative sign refers to the loss.
this means that the overall change is losing 7.625 pounds

7 0

4 years ago