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never [62]
3 years ago
13

Find the center and the radius of the circle with the equation: x^2-4x+y^2

Mathematics
1 answer:
zysi [14]3 years ago
8 0

Answer:

Step-by-step explanation:

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Stella [2.4K]

Answer:

Steps For Solving Real World Problems

2. Highlight the important information in the problem that will help write two equations.

3. Define your variables.

4. Write two equations.

5. Use one of the methods for solving systems of equations to solve.

6. Check your answers by substituting your ordered pair into the original equations.

4 0
2 years ago
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I don’t under stand how to find the area of a region!
rodikova [14]

Answer:

Step-by-step explanation:

Finding an areas of a region is simple. You can take parts of that region and add them. Or you can make a guesstimate of the area of the region like solving the area of a square.

7 0
3 years ago
Select all ratios equivalent to 15:5.<br> 9:3<br> 6:2<br> 3:1
natali 33 [55]

Answer:

All three.

Step-by-step explanation:

All three of these ratios are equivalent to 15:5. Here's how:

Let's look at the first ratio, 9:3. Did you notice something common? 3 x 3 = 9. 9/3 = 3. 5 x 3 = 15. 15/3 = 5. Both of these numbers are divisible by 3,  so these ratios are equivalent.

Second. 6:2. 2 x 3 = 6. 6/3 = 2. 5 x 3 = 15. 15/3 = 5. See the similarity? The same applies to the next problem, number three, although it does slightly differentiate.

Third, 3:1. See, here, since the ratio is smaller than the problem, we can't multiply, since this ratio is smaller than the original number. But, it's still the same thing. A ratio is a number that compares a value to another value. This means that 3:1 is 3 compared to one. Now, let me clarify. 15:5. 3:1. These are the exact same values, except they are just written in a different form, and simplified. Since 5 x 3 = 15, we know that we can divide 15 evenly by 5, which makes it 3, and divide 5 evenly by 5, which equals one. So here we have our answer for the third problem. 5:1.

Ratios are basically division, except simplified. Every single ratio problem works this way. Once you get the hang of it, it's immensely easy. Hope this helped!

6 0
3 years ago
The equation 9t = 27.99 models a constant rate situation. HURRY PLZ
MatroZZZ [7]
9t = 27.99
5t = ?
Cross-multiply : 9t? = 139.95t
?=15.55
8 0
3 years ago
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Alan spent 3 hours building a model for his science project. This was 60% of the total time he spent on the project. How many ho
Vikentia [17]

Answer:

1.8 hours i hope this helps

Step-by-step explanation:

6 0
3 years ago
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