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klasskru [66]
3 years ago
7

The area of the circle x² + y2 - 6x-4y +9 = 0 is​

Mathematics
2 answers:
allsm [11]3 years ago
8 0

Answer:

12.56 unit²

Step-by-step explanation:

<h3><u>Given:</u></h3>
  • x² + y² - 6x - 4y + 9 = 0
<h3><u>To find:</u></h3>
  • The area of circle
<h3><u>Solution:</u></h3>

<u>The form of the circle is: </u>

  • (x- h)² + (y-k)² = r²

<u>Let's bring the given to the form of a circle as above:</u>

  • x² + y² - 6x - 4y + 9 = 0
  • x² - 6x  + y²-  4y + 9 = 0        ⇒ combining like terms and completing square
  • x² - 6x + 9 + y²- 4y + 4 = 4    ⇒ adding 4 to both sides
  • (x-3)² + (y - 2)² = 2²                ⇒ got the form of this circle

As per the form, we got r² = 2², so the radius of circle is 2 units.

<u>The area of circle:</u>

  • A= πr² = 3.14×2² = 12.56 unit²

noname [10]3 years ago
7 0

Answer:

Your answer is here.Enjoy dude

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Rudiy27

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3 0
3 years ago
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Write the number in standard form.<br> 7 x 107
laila [671]

Answer:

<u>749</u>

Step-by-step explanation:

Break apart the equation:

(7 x 100) + (7 x 7)

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700 + 49 = 749

Hope this helps

3 0
3 years ago
Explain please thanks :)
dem82 [27]

Answer:

24

Step-by-step explanation:

The question is saying, how many three digit numbers can be made from the digits 3, 4, 6, and 7 but there can't be two of the same digit in them. For example 346 fits the requirements, but 776 doesn't, because it has two 7s.

Okay, on to the problem:

We can do one digit at a time.

First digit:

There are 4 digits that we can choose from. (3, 4, 6, and 7)

Second digit:

No matter which digit we chose for the first digit, there is only going to be 3 of them left, because we already chose one, and you can't repeat that same digit. So there are 3 options.

Third digit:

Using the same logic, there are only 2 options left.

We have 4 choices for the first digit, 3 choices for the second, and 2 for the third.

Hence, this is 4 * 3 * 2 = 24 three-digit numbers that can be made.

8 0
2 years ago
Aileen drives 208 miles in 4 hours. What is her speed in miles per hour? (label with "miles per hour")
77julia77 [94]

<u>Answer:</u>

52 miles per hour (mph)

<u>Step-by-step explanation:</u>

208 miles ÷ 4 hours = 52 miles per hour (mph)

<em>Hopefully this helps! Sorry if wrong. You are loved and you are beautiful/handsome!</em>

-Bee

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Otrada [13]

its -325

:3

hope this helped gooooood luck ;3

7 0
3 years ago
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