3 years ago

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Mathematics

1 answer:

lisabon 2012 [21]3 years ago

6 0

Answer:

yes

Step-by-step explanation:

because

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The sum of the areas of two circles is 80 pie square meters. Find the length of a radius of each circle if one of them is twice

Svetach [21]

Answer:

The radius of the circles are $4\ m$ and $8\ m$

Step-by-step explanation:

Let

x-----> the radius of larger circle

y----> the radius of smaller circle

we know that

$\pi x^{2} +\pi y^{2}=80\pi$

$x^{2} +y^{2}=80$ -----> equation A

Remember that

$x=2y$ -----> equation B

substitute equation B in equation A and solve for y

$(2y)^{2} +y^{2}=80$

$4y^{2} +y^{2}=80$

$5y^{2}=80$

$y^{2}=16$

$y=4\ m$

Find the value of x

$x=2y$

$x=2(4)=8\ m$

therefore

The radius of the circles are $4\ m$ and $8\ m$

4 0

2 years ago

7w + (-11w)<br><br> help i suck at math thank you

goldfiish [28.3K]

Answer:

-4

Step-by-step explanation:

7w + (-11w)

Postive negative negative

7w-11w

= - 4

6 0

3 years ago

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The parallelogram shown below has an area of 35 units2.

sleet_krkn [62]

The height is 5 becuase if the area is 35 that means the length is 7 so you would divide and get 5

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3 years ago

Please helpp find the volume of each figure

pentagon [3]

Answer:

3.33

4.33

TVE figures is that

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3 years ago

G2 – 4g – 21 = (g – )(g + )

Sloan [31]

<span>g^2 – 4g – 21 = (g – 7)(g +3 )

hope it helps</span>

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2 years ago

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