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Aliun [14]
3 years ago
14

Find the area of the circle 11 yd

Mathematics
2 answers:
lubasha [3.4K]3 years ago
4 0
11yd is the diameter and circumference is 2πr = 2π(d/2) = πd = 11π yd
Norma-Jean [14]3 years ago
4 0
The answer is 94.98 yd
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What does -2(-5x+9)-9x equal
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-2(-5x+9)-9x
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A football team won 16 games last year. This year the team won 20 games. What is the percent increase in the number of games the
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25%

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4 0
3 years ago
Find the center and radius of the circle described by the equation
Debora [2.8K]
Complete the square fr x and y's sepreatly to get into form
(x-h)²+(y-k)²=r²
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so


group x's and y's seperatly
(4x²-10x)+(4y²+24y)+133/4=0
undistribute leading confident from each
4(x²-2.5x)+4(y²+6y)+133/4=0
take 1/2 of each linear confident and square it and add negative and positive inside the parenthasees
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6/2=3, 3²=9
4(x²-2.5x+1.5625-1.5625)+4(y²+6y+9-9)+133/4=0
factor perfect squares
4((x-1.25)²-1.5625)+4((y+3)²-9)+133/4=0
expand
4(x-1.25)²-6.25+4(y+3)²-36+133/4=0
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add 9 to both sides
4(x-1.25)²+4(y+3)²=9
divide both sides by 4
(x-1.25)²+(y+3)²=9/4
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the center is (1.25,-3) and the radius is 1.5
8 0
3 years ago
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