3 years ago

Please help

Mathematics

1 answer:

Strike441 [17]3 years ago

4 0

My educated guess is A

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Find the sum of the first 5 terms of the sequence 4,2,0

Free_Kalibri [48]

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Look at the figure: An image of a right triangle is shown with an angle labeled x. If tan x° = e divided by 8 and sin x° = e div

Nastasia [14]

Answer:

cos x = 8/f.

Step-by-step explanation:

We can use the identity :

tan x = sin x / cos x.

Substituting:

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e/8 * cos x = e/f

cos x = e/f * 8/e

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divide each by 5

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Choice B

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andrew11 [14]

Answer:

It takes the second worker 11 hours to do the job alone

Step-by-step explanation:

The problem tells you how to work it.

$\dfrac{1}{11}+\dfrac{1}{x}=\dfrac{2}{11}\\\\x+11=2x \qquad\text{multiply by 11x}\\\\11=x \qquad\text{subtract x}$

x = 11 tells you the second worker takes 11 hours to do the job alone.

_____

You can also work directly with the fractions. Subtract 1/11 and you have ...

1/x = 1/11

It should not be a real stretch to see that x=11. If you need, you can multiply both sides by 11x to get 11=x.

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Step-by-step explanation:

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3 years ago