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aalyn [17]
3 years ago
10

In the standard (x,y) coordinate plane, what is the area of the circle x^2 + y^2 =169?

Mathematics
1 answer:
schepotkina [342]3 years ago
6 0

Answer:

169π

Step-by-step explanation:

circle eq: (x-a)²+(y-b)²=r², where (a,b) is center and r is radius

r²=169

r = ±13

since a radius length must be positive, r = +13, not -13

A of circle: πr²

r = 13

169π

given that the circle eq has r², you could've noticed that you can take the constant in the circle eq and multiply that by π to get the same answer

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3 years ago
Jessica has 4/8 of a bottle of Robitussin syrup on hand. The pharmacist instructs Jessica to reduce the syrup by 1/2 so he can p
andrey2020 [161]

Answer:

0

Step-by-step explanation:

First, in order to subtract these fractions, we need the denominators to be the same number.

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Nana76 [90]

Answer:

5

Step-by-step explanation:

First we need to find the slope

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Then we can use point slope form to make the equation

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6 0
2 years ago
Read 2 more answers
Answer:????? Math (O-O)
EleoNora [17]

Answer: the first one is 30. The second is .294. The third is 2/3.

Step-by-step explanation:

5 0
3 years ago
How do you solve this using substitution <br> -8x-y=-30<br> Y=12x-50
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Step-by-step explanation:

substitude the y value into y in the first equation

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you see it?

then solve

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you got the value = 12x

then you divide with 12

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