Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credi
t.
x2 − 4x + y2 + 8y = −4
1 answer:
Answer:
The center is:
(2, -4)
Step-by-step explanation:
We have the following equation
The general equation of a circle has the following form
Where r is the radius and the point (h, k) is the center of the circle
To transform the given equation in the general equation of a circumference we must use the method of square completions
Step 1
<u>Step 2</u>
<u> </u>Add and subtract For an equation of the form
<u>Step 3 </u> Factor the expressions within the parentheses
<u>Step 4 Simplify</u>
Finally
The center is:
(2, -4)
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2x^2+4x+5
Step-by-step explanation:
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Answer:
Factoring is the opposite of multiplying (or using the distributive property to multiply.)
Step-by-step explanation:
7.5
-11 + 26 is 15. 15 divided by 2 (finding the midpoint of the two numbers) is 7.5.
I can't help without a question.
Cross multiply
17x9 = 153
U x 11 = 11u
Set equal to eachother
153=11u
Divide 11 on both sides
153/11=11u/11
13.90909090 = u
U = 13.9