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3 years ago

if a number is increased by 5 and the result is then divided by 3, the result is 7. write an equation.

Mathematics

1 answer:

Sedaia [141]3 years ago

3 0

16+5=21
21/3=7
I believe that is the correct answer]

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butalik [34]

Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

9/2 as a mixed number

frutty [35]

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2 years ago

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4. A river tour boat is going down a stream to a park for lunch and then back up. It is a 60-mile round trip. On

DiKsa [7]

Answer:

The speed of the boat in still water is 10 miles / hour

Step-by-step explanation:

The trip there, and the trip back are the same -- 30 miles

Let the rate of the boat = x

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30 = 6*(x - y)

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2 years ago

If tan a = 9／40<br>use trigonometric identities to find the values of sin a and cos a.

Sindrei [870]

Answer:

see explanation

Step-by-step explanation:

Given

tan a = $\frac{9}{40}$ = $\frac{opposite}{adjacent}$

We require the hypotenuse h

Using Pythagoras' identity

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h = $\sqrt{1681}$ = 41 , thus

sin a = $\frac{opposite}{hypotenuse}$ = $\frac{9}{41}$

cos a = $\frac{adjacent}{hypotenuse}$ = $\frac{40}{41}$

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2 years ago