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3 years ago

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1 answer:

slavikrds [6]3 years ago

5 0

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Which equation represents the polar form of x² + (y + 4)² = 16?

Paraphin [41]

$x^2+y^2=r^2\hspace{5em}x=r\cos(\theta )\hspace{5em}y=r\sin(\theta ) \\\\[-0.35em] ~\dotfill\\\\ x^2+(y+4)^2=16\implies x^2+\stackrel{binomial~expansion}{y^2+8y+16}=16 \\\\\\ \underset{x^2+y^2}{r^2} + 8(~\underset{8y}{r\sin(\theta )}~)=16-16\implies r^2+8r\sin(\theta)=0 \\\\\\ r^2=-8r\sin(\theta )\implies \cfrac{r^2}{r}=-8\sin(\theta )\implies r=-8\sin(\theta )$

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2 years ago

The area of a rectangular rug in Monica's living room is 212.5 square feet. If the length of the rug is 17 feet, what is the wid

LuckyWell [14K]

A rectangle’s area is width x height. So plug in what you know and solve. 212.5 = w x 17. To solve 212.5/17= 12.5. So the width must be 12.5.

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3 years ago

HELP ME <br> solve for X

Tanya [424]

Answer:

203/11x

Step-by-explanation: I am soo very sorry gave you the wrong answer before but going over it I see it is 203/11x

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3 years ago

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Find the slope of the line containing the points (4, -7) and (6,-8).

masha68 [24]

-1/2 ans. Hope it helps..

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3 years ago