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natka813 [3]
3 years ago
6

Find the center and radius of a circle defined by the equation x^2+yy^2+4x-8y+13=0

Mathematics
1 answer:
gogolik [260]3 years ago
8 0
Hello : 
x²+y²+4x-8y +13 = 0
(x² +4x) +(y² -8y )+13 = 0
(x²+4x+4) -4 +(y-8y +16) -16 +13 = 0
(x+2)² +(y -4)² = 7
the center is : (-2 , 4) and radius <span>√7</span>
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If the sum of five consecutive even integers is 290, what is the smallest of the five integers?
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Therefore, n+n+2+n+4+n+6+n+8=290

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3 years ago
Write the sum of 5x2 + 2x - 10 and 2x2 + 6 as a polynomial in standard form.
vaieri [72.5K]

Answer:

7x^2+2x-4

Step-by-step explanation:

a standard form is ax+by=c

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3 years ago
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Triangle ABC is similar to triangle DEF.
amid [387]

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1.5

Step-by-step explanation:

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2 years ago
I need help with this problem?
Cerrena [4.2K]

Answer:

Step-by-step explanation:

Volume of cylinder:

\boxed{\text{Volume of cylinder=$\pi r^{2}h$}}

<u>Bottom cylinder:</u>

1 inch = 2.54 cm

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r = 14/2 = 7 in

r = 7 *2.54 = 17.78 cm

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<u>Upper cylinder:</u>

diameter = 12 in

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Volume = 3 * 15.24 *15.24 * 30.48

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Volume of the object = 9635.59 + 21237.63                  

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2 years ago
Please help I don’t understand math
andrew-mc [135]

Answer:

x = 12

Step-by-step explanation:

The sum of the two smaller angles is 140

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Divide each side by 5

5x/5 = 60/5

x = 12

6 0
3 years ago
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