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olga nikolaevna [1]
3 years ago
6

Are these fractions equivalent or nonequivalent? 4x/7y 8x/14y

Mathematics
1 answer:
ivann1987 [24]3 years ago
6 0

Answer:

\frac{8x}{14y}  =  \frac{ \frac{8x}{2} }{ \frac{14y}{2} }  =  \frac{4x}{7y}  \\

Hence, they are equivalent.

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My mystery number has 5 tens and 29 ones?
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Match these items match the items in the left column to the items in the right column
Setler [38]
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?simplified the expression
larisa [96]
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5 0
3 years ago
One of the fastest recorded speeds of a cheetah is 26.8 m/s. Approximately, what is this speed in kilometers per hour? [1 kilome
ra1l [238]

We know that 1 kilometer = 1,000 meters and that 1 hour = 60 minutes = 3,600 seconds


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7 0
3 years ago
(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x
Aliun [14]
As

\tan x=\dfrac{\sin x}{\cos x}
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we have

\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x

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(where n is any integer)

\implies x=n\pi
5 0
3 years ago
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