2 years ago

Could someone please help me with this one

Mathematics

1 answer:

Dvinal [7]2 years ago

8 0

The answer is a because when they are added that's what they equal then divide by 5

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Which equation represents the circle described? (in picture)

Sedaia [141]

You are right. In circle equation we have =r² so the correct answer will be C od D. But we have to calculate the center of a circle.

$x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24$

Complete the square:

$x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2$

And we have:

$(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
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So the answer is C (the same left side of equation).

6 0

3 years ago

If f(x)=2xsquared+3x-2/x+2 is continuous at x=-2, then f (-2)=

Svet_ta [14]

F(x) = (2x-1)(x+2)/ (x+2)
f(x) = 2x-1
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2 years ago

6.3m = how many ft? please hurry

kondaur [170]

Answer:

20.6693

Step-by-step explanation: