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3 years ago

Helppp me please!!!!

Mathematics

1 answer:

Anton [14]3 years ago

3 0

A. It is 176^2 or 30976 or 3.0976 x 10^4 whatever your prefer

B. 972

C. It is 0.00548697 or 4/729 or (2/27)^2 whatever your prefer

D. It is -16 x 20^4 or -2560000 whatever your prefer

E. x^4 y^4

F. h^10 k^6

G. m^11 n^15

H. b^2 d^6
....,,,,,,, you welcome !!!!!! :)

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A pilot flew a 400 mile flight in 2.5 hours flying into the wind. Flying the same rate and with the same wind speed the return t

eduard

Answer: 20 mph

Explanation:

Speed is a physical quantity which is equal to the ratio between the distance covered (d) and the time taken (t):

$v=\frac{d}{t}$

In the first part of the problem, the plane flew a distance of d=400 mi in a time of t=2.5 h. The speed of the plane in this case was the difference between the proper speed of the plane, v, and the speed of the wind, w, since the plane flew opposite to the wind. So we can write:

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During the return trip, the plane flew with a speed (v+w), since the wind was on the tail, and it took 2 hours to cover the same distance:

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So we have two equations with two unknown variables. From (1), we get

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Substituting into eq.(2)

$(160+w)+w=200\\160+2w=200\\2w=40\\w=20 mph$

So, the speed of the wind was 20 mph.

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3 years ago

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Hope that helps :)

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3 years ago

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If r=20.5 and s=34.2 find S Round to the nearest tenth

astraxan [27]

Answer: option d

Step-by-step explanation:

Remember the identity:

$tan\alpha=\frac{opposite}{adjacent}$

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Knowing that: you need to find the measure of the angle "S" , $r=20.5$ (which is the adjacent side) and $s=34.2$ (which is the opposite side), you can sustitute values into $\alpha =arctan(\frac{opposite}{adjacent})$

Then, you get that the measure of "S" rounded to the nearest tenth is:

$S=arctan(\frac{34.2}{20.5})\\\\S=59.1\°$

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4 years ago

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