What is the general form of the equation of a circle with its center at (-2,1) and passing though (-4,1) ?
1 answer:
Equation is :( x + 2 )² + ( y - 1 )² = r²( - 4 + 2 )² + ( 1 - 1 )² = r²4 = r², than we will plug in to a formula:( x + 2 )² + ( y - 1 )² = 4x² + 4 x + 4 + y² - 2 y +1 = 4x² + y² + 4 x - 2 y + 1 = 0
the answer is : <span>x2 + y2 + 4x − 2y + 1 = 0 </span>
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Answer:
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Step-by-step explanation:
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60 is 12% of what number
60 = 0.12x
60 / 0.12 = x
500 = x......so 60 is 12% of 500
Answer:
315
Step-by-step explanation:
75% of 180 is 135,
180 + 135 = 315.
41/50 = 0.82
9/10 = 0.9
10/11 = 0.91
So 41/50 is closer to 9/10
(x-70) + (x-70) + 90 +90
2x-140+180
I'm not sure on the properties though...I hope I was able to help
