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3 years ago

13

Which equation below describes a circle. What are the coordinates of the center of the circle

1 answer:

Eddi Din [679]3 years ago

8 0

The equation for a circle is
(x - h)^2 + (y - k)^2 = r^2 where r is the radius and the center is (h,k). I don’t see any options for answers though so I can’t help with the last part.

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It took Laura 12.5 hours to read a 360 page book, how long would it take for her to read a 400 page book?

Lyrx [107]

$\bf \begin{array}{ccll} hours&pages\\ \cline{1-2} 12&360\\ x&400 \end{array}\implies \cfrac{12}{x}=\cfrac{360}{400}\implies \cfrac{12}{x}=\cfrac{9}{10} \\\\\\ 120=9x\implies \cfrac{120}{9}=x\implies \cfrac{40}{3}=x\implies 13.\overline{3}=x$

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3 years ago

A cylindrical swimming pool has a diameter of 20 feet and a height of 3.5 feet. How many gallons of water can the pool contain?

kvasek [131]

Answer:

The swimming pool will contain approx $8243\ gal$ of water.

Step-by-step explanation:

Given the swimming pool is in a cylindrical shape.

And the dimensions are $20\ feet$ diameter with a height of $3.5\ feet.$

Also, $1\ ft^3 =7.5\ gal$

First, we will find the volume of the swimming pool.

The swimming pool is in cylindrical shape.

So, the volume would be $\pi r^2h$

The height $(h)$ is given as $3.5\ feet.$ To calculate radius $(r)$ we will divide the diameter by two.

The radius of the cylinder would be $\frac{20}{2}=10\ feet$

Plug these values in the formula we get,

$\pi r^2h\\=\pi\times 10^2\times 3.5\\=3.14\times 100\times 3.5\\=1099\ ft^3$

Now, it is given $1\ ft^3 =7.5\ gal$

So, $1099\ ft^3 =1099\times 7.5\ gal=8242.5\ gal$

The swimming pool will contain approx $8243\ gal$ of water.

6 0

3 years ago

Please help 6x + 32 = -2x

netineya [11]

Answer: the answer is x=-4.

Step-by-step explanation:

5 0

1 year ago

PLEASE ANSWER I NEED THIS ASAP

Rudik [331]

It would also be 42 because the triangle is divided in half.

5 0

3 years ago

Read 2 more answers

volunteers collected non perishable food items and packed 14 items per box. If the volunteers collected a total fo 200 items, ho

klio [65]

Do 200/14 and get 14.2857142857 so about 14 boxes

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1 year ago