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2 years ago

14

9. Use the distance formula to find the distance between the points (-4,-4) and (4,4).

1 answer:

Tanzania [10]2 years ago

6 0

Answer:

16

Step-by-step explanation:

Distance formula = $(x_{1}-x_{2})+(y_{1}-y_{2})$

Depending on which point is A and Which point is B, the answer is one of the two.

However, there is no such thing as negative distance, so your answer is 16 points in a certain direction.

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Using the piling method, which of the following can be constructed from polygons alone? check all that apply

zimovet [89]

Answer:

Prism, Pyramid not including vertex

Step-by-step explanation:

Apex

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3 years ago

Find the x and y intercept of the equation -2x+4y=12

tresset_1 [31]

Answer:

x and y intercept

x —> (–6,0)

y —> (0, 3)

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3 years ago

The harmonic motion of a particle is given by f(t) = 2 cos(3t) + 3 sin(2t), 0 ≤ t ≤ 8. (a) When is the position function decreas

iren [92.7K]

For the last part, you have to find where $f'(t)$ attains its maximum over $0\le t\le8$ . We have

$f'(t)=-6\sin3t+6\cos2t$

so that

$f''(t)=-18\cos3t-12\sin2t$

with critical points at $t$ such that

$-18\cos3t-12\sin2t=0$

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$3(\cos^3t-3\cos t\sin^2t)+4\sin t\cos t=0$

$\cos t(3\cos^2t-9\sin^2t+4\sin t)=0$

$\cos t(12\sin^2t-4\sin t-3)=0$

So either

$\cos t=0\implies t=\dfrac{(2n+1)\pi}2$

or

$12\sin^2t-4\sin t-3=0\implies\sin t=\dfrac{1\pm\sqrt{10}}6\implies t=\sin^{-1}\dfrac{1\pm\sqrt{10}}6+2n\pi$

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$\dfrac\pi2\approx2$

$\dfrac{3\pi}2\approx5$

$\dfrac{5\pi}2\approx8$

$\sin^{-1}\dfrac{1+\sqrt{10}}6\approx1$

$2\pi+\sin^{-1}\dfrac{1+\sqrt{10}}6\approx7$

$2\pi+\sin^{-1}\dfrac{1-\sqrt{10}}6\approx6$

4 0

3 years ago

OMG HELP ME OUTTTTTTTTTTTTTTTTTT GRRRR

Illusion [34]

Answer:

635.2 cm^3.

Step-by-step explanation:

Volume of the cylinder = π r^2 h

= 3.14 * 4^2 * 5 = 251.2

Volume of the prism = 4 *8 * 12

= 384

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8 0

2 years ago

Read 2 more answers

ABC is a straight angle.<br> Find ABX and CBX .

AnnyKZ [126]

Answer:

Step-by-step explanation:

14x+70+20x+8 =180

34x + 78 = 180

34x = 102

X = 3

ABX 14(3)+70 = 112

CBX = 20(3) +8= 68

3 0

3 years ago