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2 years ago

What is the standard form of the equation of a circle given by x2 + y2 – 18x + 8y + 5 = 0?

Mathematics

2 answers:

mario62 [17]2 years ago

7 0

The guy who answered is right but the radius is 92

avanturin [10]2 years ago

3 0

X²-18x+81 + y²+8y+16 = -5+81+16=92
(x-9)² + (y+4)² = (2✓23)²

circle centered at (9,-4) with radius 2✓23

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The coordinates of the endpoint of QS are Q(-9,8) and S(9,-4). Point R is on cue as such that QR:RS Is in the ratio 1:2. What ar

marishachu [46]

R(–3, 4)

Step-by-step explanation:

Let Q(-9,8) and S(9,-4) be the given points and let R(x, y) divides QS in the ratio 1:2.

By section formula,

$R(x, y)=R\left(\frac{m x_{2}+n x_{1}}{m+n}, \frac{m y_{2}+n y_{1}}{m+n}\right)$

Here, $x_{1}=-9, y_{1}=8, \text { and } x_{2}=9, y_{2}=-4 \text { and } m=1, n=2$

Substituting this in the section formula

$R(x, y)=R\left(\frac{1(9)+2(-9)}{1+2}, \frac{1(-4)+2(8)}{1+2}\right)$

To simplifying the expression, we get

$\Rightarrow R(x, y)=R\left(\frac{9-18}{3}, \frac{-4+16}{3}\right)$

$\Rightarrow R(x, y)=R\left(\frac{-9}{3}, \frac{12}{3}\right)$

⇒ R(x,y) = R(–3,4)

Hence, the coordinates of point R is (–3, 4).

6 0

3 years ago

A basketball coach is purchasing 12 shirts for her team, each with a different number. At the checkout counter, the clerk places

ICE Princess25 [194]

Kidjov the answer I came up with for you is 792 I hope this helps

4 0

3 years ago

Read 2 more answers

-3(4x+5) please help<br>

Natasha_Volkova [10]

Answer:
-12x-15
explanation:
you multiply -3 by 4x, gives u -12x and then you multiply -3 by 15 which gives you -15
then you put it in an equation
-12x-15

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2 years ago

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2 years ago

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sdas [7]

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The number in the middle

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1 year ago