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3 years ago

8

Kevin said that if you triple his age the result will be 1 less than his mother age

1 answer:

Ivahew [28]3 years ago

8 0

Basically, this problem is saying that if you multiply x by 3, then you will get a number that is one less than y. So, if you switch that around a bit, then the problem is saying that if you subtract 3x from y, you'll get 1.

Your final answer should be y - 3x = 1.

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3x To the power of -2 X 4x To the power of -3

damaskus [11]

Answer:

Answer = $12 x^{-5}$

Step-by-step explanation:

Step 1:-

simplifying $3 x^{-2} × 4 x^{-3}$

$3 × 4(x^{-2} )(x^{-3} )$

base are equal powers are added

on simplification $12 x^{-5}$

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3 years ago

Find the area of the shaded regions. Give your answer as a completely simplified exact value in terms of π (no approximations).

masya89 [10]

Answer:

$40\pi \ m^{2}$

Step-by-step explanation:

we know that

The area of a circle is equal to

$A=\pi r^{2}$

In this problem we have

$r=10\ m$

Substitute and find the area

$A=\pi (10)^{2}=100 \pi\ m^{2}$

Remember that

$360\°$ subtends the area of complete circle

so

by proportion

Find the area of the shaded regions

The central angle of the shaded regions is equal to $2*72\°=144\°$

$\frac{100\pi }{360} \frac{m^{2}}{degrees} =\frac{x }{144} \frac{m^{2}}{degrees} \\ \\x=144*100\pi /360\\ \\ x=40\pi \ m^{2}$

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3 years ago

What is the point of symmetry for the circle <br> (x + 2)2 + (y – 4)2 = 25?

amm1812

Answer:

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Step-by-step explanation:

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andre [41]

Y varies inversely with x
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