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Rasek [7]
3 years ago
5

Which of the following is the equation of a circle with center (5, -2) and a radius of 3?

Mathematics
1 answer:
ryzh [129]3 years ago
8 0
EQUATION OF A CIRCLE = (x-h)² + (y-k)² =r²

Since the center of the cercle is in O, then h=5 & k=-2

(x-5)² + (y+2² =9
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Rick and Sara have two children, Marcos and Jade. Use the clues to determine their ages. Rick is 4 years younger than Sara. Marc
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Step-by-step explanation:

Let age of rick = x

age of sara = y

age of marcos = a

age of jade = b

Rick is 4 years younger than Sara.

x = y - 4

Marcos is 3 years older than Jade.

a = b + 3

Rick's age is twice the age of Marcos and Jade's ages combined.

x = 2(a+b)

The youngest is 9 years old.

The youngest is jade because rick and sara are the parents and marcos is older than she is.

b = 9

How old is each??

a = b + 3

a = 9 + 3 = 12

Marcos is 12 years old

x = 2(a+b)

x = 2 (12 + 9)

x = 2 (21) = 42

Rick is 42 years old

x = y - 4

42 = y - 4

y = 42 + 4 = 46

Sara is 46 years old

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3 years ago
If you answered 17 out of 25 questions correct on a quiz, what would your grade be as a percent?​
k0ka [10]

Answer:

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Explanation:

17/25 = 0.68

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Rachel's free throw average for basketball is 60%. She wants to predict how many times in the next 50 tries she will make a free
Gnoma [55]
If she shot her average she would make 30 out of 50 shots (AKA 60%) 
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I understand this answer is really late for you but I hope you can still use it or someone else can use it if they have the same assignment

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Answer:

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Step-by-step explanation:

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You can either write 2.4 as 12/5 ( an improper fraction) or as 2(2/5) (a mixed number).
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