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3 years ago

Please help me with a-c

Mathematics

1 answer:

dem82 [27]3 years ago

5 0

A) The negative rate indicates the glacier is getting smaller ( it is melting).

B) Multiply the size by the rate of change then subtract:

58850 x 0.0004 = 23.54 miles.

58,850 - 23.54 = 58,826.54 square miles.

C) A decade is 10 years.

Multiply the rate of change by 10: 0.0004 * 10 = 0.004

(1 - 0.004)^d or (0.996)^d, where d is the number of decades.

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A jogger runs 140 m due west, then changes direction for the second leg of her run. At the end of the run, she is 374 m away fro

USPshnik [31]

Answer:

The length of her second displacement = 247.12 m.

The direction of her second displacement = 31.24° from west.

Step-by-step explanation:

As per the question,

From the figure as drawn below,

Let the starting point be O. After running 140 m due west, she reached at point A.

∴ OA = 140 m

And At the end of the run, she is 374 m away from the starting point at an angle of 20° north of west.

∴ OP = 374 m

We have to find the distance AP = x.

By using the cosine rule in triangle OAP

$cos \theta = \frac{OA^{2}+OP^{2}-AP^{2}}{2\times OA\times OP}$

After putting the given value, we get

$cos 20= \frac{140^{2}+374^{2}-x^{2}}{2\times 140\times 374}$

$x^{2}=140^{2}+374^{2} - 2\times 140\times 374\times cos 20$

∴ x = 247.12 m

Hence,the length of her second displacement = 247.12 m.

Again,

By using the cosine rule in triangle OAP, we get

$cos \alpha = \frac{OA^{2}+AP^{2}-OP^{2}}{2\times OA\times AP}$

After putting the given value, we get

$cos \alpha = \frac{140^{2}+247.12^{2}-374^{2}}{2\times 140\times 247.12}$

∴ α = 148.759°

Hence, the direction of her second displacement = 180° - α = 180° - 148.759 = 31.24° from west.

8 0

3 years ago

Hi guys I need help..... <br> How do you move on??

erma4kov [3.2K]

Answer:

There is no specific set way to move on.

Step-by-step explanation:

In most cases, I would say: time. With time wounds will fade; but scars will always be left behind. Do stuff that distracts you, like hobbies and devote yourself to them. Soon enough you'll forget what even happened to you.

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3 years ago

What is a solution to the inequality m<25

ella [17]

Answer:

I think the answer is m= -91

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3 years ago

Help plzz <br> 2decimal places<br> 165 x 0.38²

allsm [11]

Answer:

23.83

Step-by-step explanation:

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2 years ago

PLEASE HELP WILL GIVE BRANILYEST

Ivahew [28]

No because to get a proportional relationship you have to add the same number to all x to get y

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3 years ago