3 years ago

Answer this please!!!

Mathematics

1 answer:

vivado [14]3 years ago

5 0

Answer:

$40

Step-by-step explanation:

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A plane flies 440 miles with wind, and 340 miles against wind in same time. If speed of wind is 25 mph, find speed in still air?

Viefleur [7K]

V = s/t

now, t is equal for both cases so we write these 2 equations:
440/(Vp+Vw) = t

and

340/(Vp-Vw) = t
Now again, since t is equal for both cases we can make these 2 equations equal to eachother.
440/(Vp+25) = 340/(Vp-25)
(Vp - 25)*44=34*(Vp+25)
44Vp - 1100 = 34Vp + 850
10Vp = 1950
Vp = 195

Answer is 195mph

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3 years ago

The volume of a cube is 27 cubic inches. Which expression represents s, the length of a side of the cube?

NeTakaya

volume of a cube = S^3

which would be S x S x S

so answer is D

8 0

3 years ago

Read 2 more answers

Rujuan

Leona [35]

Answer:

Sin X=Cos Y

Step-by-step explanation:

Objective: Understand trigonometric relations such that

Cosine and Sine are similar to complementary angles that if X+Y are complementary angles,

Cos X= Sin Y and Cos Y= Sin X

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3 years ago

In response to very high demand, a new bike has been marked up by 25% and is now selling for $210.00. How much was the bike befo

klemol [59]

Answer:

210.00 divided by 4 = 52.5 then you would subtract 210 by 52.5 and you would get <u>157.5.</u>

Step-by-step explanation:

8 0

3 years ago

Express sin3theta in terms of sintheta

SashulF [63]

$\sin3\theta=\sin(\theta+2\theta)=\sin\theta\cos2\theta+\cos\theta\sin2\theta$
$=\sin\theta(1-2\sin^2\theta)+2\cos^2\theta\sin\theta$
$=\sin\theta-2\sin^3\theta+2(1-\sin^2\theta)\sin\theta$
$=3\sin\theta-4\sin^3\theta$

8 0

3 years ago