2 years ago

I don’t understand how to do this problem

Mathematics

1 answer:

irga5000 [103]2 years ago

3 0

Answer:

Car

Step-by-step explanation:

Well, the car is 21 feet in one second.

6*21=126

The truck, however, is 18 feet per second.

18*6=108

The car is faster.

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Consider the following.x = t − 2 sin(t), y = 1 − 2 cos(t), 0 ≤ t ≤ 8πSet up an integral that represents the length of the curve.

sweet [91]

The length of the parametric curve (call it <em>C </em>) is given by

$\displaystyle\int_C\mathrm ds=\int_0^{8\pi}\sqrt{\left(\frac{\mathrm dx}{\mathrm dt}\right)^2+\left(\frac{\mathrm dy}{\mathrm dt}\right)^2}\,\mathrm dt$

We have

$x=t-2\sin t\implies\dfrac{\mathrm dx}{\mathrm dt}=1-2\cos t$

$y=1-2\cos t\implies\dfrac{\mathrm dy}{\mathrm dt}=2\sin t$

Now,

$\left(\frac{\mathrm dx}{\mathrm dt}\right)^2+\left(\frac{\mathrm dy}{\mathrm dt}\right)^2=5-4\cos t$

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Myles said that 5 x 0.13 is 6.5. Do you agree? Explain.<br><br> Brainliest if correct!

77julia77 [94]

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Find the missing angle. PLEASE HELP!! I WILL GIVE 100 POINTS!!

mariarad [96]

Answer:

50°

Step-by-step explanation:

90°-40°=50°

The square on the angle means 90°.

Hope this helps! :D

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2 years ago