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Amanda [17]
3 years ago
6

Find the center and radius of the circle with the equation. Please show work!

Mathematics
1 answer:
mina [271]3 years ago
3 0

Answer:

<h2>(1, -2)</h2>

Step-by-step explanation:

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - center

r - radius

We have:

x^2-2x+y^2+4y=4\qquad\text{add}\ 1^2\ \text{and}\ 2^2\ \text{to both sides}\\\\x^2-2x+1^2+y^2-2(-2)(y)+2^2=2(1^2)(2^2)\qquad\text{use}\ (a\pm b)^2=a^2\pm2ab+b^2\\\\(x-1)^2+(y-(-2))^2=8\\\\h=1,\ k=-2\to(1,\ -2)

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The solutions to the inequality y s 2x - 4 are shaded on the
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Y= 2(3) -4
Y= 2

(3,2) is the answer

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3 0
3 years ago
Can any one help me with this?
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Answer: to #3 is no it is not a function

Step-by-step explanation:

6 0
3 years ago
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3
monitta

Answer:

21 calories per cup

Step-by-step explanation:

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8 0
3 years ago
A right triangle has legs of lengths 14 and 16 inches. Find the length of
Mice21 [21]

Answer:

about 21.3

Step-by-step explanation:

I found the hypotenuse value by doing the Pythagorean theorem.

a^2+b^2=c^2.

"a" and "b" are the values of the legs, and "c" is the value of the hypotenuse. So, "a" is 14 and "b" is 16.

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196+256=452.

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In conclusion, the length of the hypotenuse rounded to the nearest tenth is 21.3 inches.

6 0
3 years ago
logs are stacked in a pile on the bottom row and 15 on the top row . there are 10 rows in all with each row having one more log
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Since there is a common difference of one, this is an arithmetic sequence of the form a(n)=a+d(n-1) which in this case is:

a(n)=15+1(n-1)

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8 0
4 years ago
Read 2 more answers
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