2 years ago

He ages of mark and adam add up to 28 years total. mark is 20 years older than adam. how many years old is adam

Mathematics

1 answer:

OverLord2011 [107]2 years ago

6 0

You divide and ur answer is 8

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If A(3,4) and B(10,4) are the end points of a diameter of circle "O", what is the area of the circle O

ikadub [295]

Answer:

$\large\boxed{\dfrac{49\pi}{4}}$

Step-by-step explanation:

The formula of an area of a circle:

$A=\pi r^2$

r - radius

We have the endpoints of a diameter of a circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points A(3, 4) and B(10, 4):

$d=\sqrt{(10-3)^2+(4-4)^2}=\sqrt{7^2+0^2}=\sqrt{7^2}=7$

Therefore we have the length of the diameter: d = 7

We know: d = 2r. Therefore

$r=\dfrac{7}{2}$

Substitute to the formula of an area:

$A=\pi\left(\dfrac{7}{2}\right)^2=\dfrac{49\pi}{4}$

There is no such answer in the answers to choose.

Apparently you have some error in the coordinates of the endpoints.

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bekas [8.4K]

Answer:

cjjffitv5xucrurruufryrhgjtrhsgehfjgyrfjgyi

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2 years ago

Thaddeus already has $5 saved. He wants to save more to buy a book . Complete the table , and graph the ordered pairs on the coo

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We are going to need to see the table

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Pepsi [2]

Step-by-step explanation:

i could have answer it if you have given the table too!

that's it ....

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