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VARVARA [1.3K]
3 years ago
8

A circle has its center at (0,0) and passes through the point (0,9). What is the standard equation of the circle?

Mathematics
1 answer:
vitfil [10]3 years ago
6 0

Answer:

Step-by-step explanation:

I believe the answer is x² + y² = 9²

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3 years ago
Dustin has only nickels and quarters in his piggy bank. He was 49 total for combined value of $8.85. How many of each type of co
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Let's use the variables N and Q for the number of nickels and the number of quarters.

We know there are 49 total coins, so we can write the following equation:

N + Q = 49

We can solve this equation for one variable which will help in the next step. Let's solve for N:

N = 49 - Q

Next, we know that nickels are worth $0.05 and quarters are worth $0.25. We can use these values along with the total value of $8.85 to create another equation.

0.05N + 0.25Q = 8.85

Now we can use substitution to solve our system out equations. We solved the first equation for N, so we can plug 49 - Q in for N.

0.05(49-Q) + 0.25Q = 8.85

Distribute and combine like terms.

2.45 - 0.05Q + 0.25Q = 8.85

2.45 + 0.2Q = 8.85

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N + 32 = 49

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Dustin has 32 quarters and 17 nickels.


4 0
3 years ago
EASY POINTS EVALUATION
dedylja [7]

Answer:

\frac{4}{9}

Step-by-step explanation:

( \frac{16 {}^{ \frac{1}{2} } }{81 {  }^{ \frac{1}{2} } }) \\ (  \frac{ {4}^{2 \times  \frac{1}{2} } }{9^{2 \times  \frac{1}{2} } }) \\ ( \frac{4^{1} }{9 ^{1} } ) \\  \frac{4}{9}

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2 years ago
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