3 years ago

Add this problem 0645 + 0745

Mathematics

1 answer:

Citrus2011 [14]3 years ago

4 0

Answer:1,390

Step-by-step explanation: add the top and bottom

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Convert the general form of the circle given into standard form.

Semmy [17]

$The\ standard\ form\ of\ the\ circle:\\\\(x-a)^2+(y-b)^2=r^2\\\\where\\(a;\ b)\ are\ the\ coordinates\ of\ a\ center\ of\ the\ circle\\r\ is\ a\ radius\ of\ the\ circle\\------------------------$

$2x^2+2y^2-20x-8y+50=0\ \ \ \ |divide\ both\ sides\ by\ 2\\\\x^2+y^2-10x-4y+25=0\\\\x^2-10x+y^2-4y=-25\\\\x^2-2x\cdot5+y^2-2y\cdot2=-25\\\\\underbrace{x^2-2x\cdot5+5^2}_{(*)}-5^2+\underbrace{y^2-2y\cdot2+2^2}_{(*)}-2^2=-25\\(x-5)^2-25+(y-2)^2-4=-25\\\\(x-5)^2+(y-2)^2-29=-25\\\\(x-5)^2+(y-2)^2=-25+29$

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$(*)\ (a-b)^2=a^2-2ab+b^2$

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4 years ago

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A line passes through the point (0,1) and has a positive slope. Which of these points could that line NOT pass through?

Maksim231197 [3]

Answer:

(-3, 1)

(5,-2)

Step-by-step explanation:

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