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Airida [17]
3 years ago
14

Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and

calculations to receive credit x^2 - 4x + y^2 + 8y = -4​

Mathematics
1 answer:
Bond [772]3 years ago
8 0

<em>x</em> ² - 4<em>x</em> + <em>y</em> ² + 8<em>y</em> = -4

(<em>x</em> ² - 4<em>x</em> + 4) + (<em>y</em> ² + 8<em>y</em> + 16) = -4 + 4 + 16

(<em>x</em> - 2)² + (<em>y</em> + 4)² = 16

(<em>x</em> - 2)² + (<em>y</em> + 4)² = 4²

which is the equation of a circle centered at (2, -4) and with radius 4.

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Answer:

4 hours

Step-by-step explanation:

In  6  hours,  J  paints  1  room

So, in  1  hour,  J  paints  1/6 th of the room

Using similar logic, in  1  hour,  T  paints  1/12 th of the room.

Working together in one hour, they paint  (1/6+1/12) th =1/4  of the room.

1/4  of the room is painted in  1  hour

So,  1  room is painted in  1 1/4=4  hours

5 0
2 years ago
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Mumz [18]

Answer:

1

Step-by-step explanation:

x is 1 and y is 1 and the total is three so 1

4 0
3 years ago
Where is the hole for the following function located f(x)= x+3/(x-4)(x+3)
Marizza181 [45]
In a rational function, holes are located where f(x) is undefined(the denominator is 0), but the undefined points can be factored out. In f(x), when x is 4 or -3, f(x) is undefined. But, x+3 can be factored out, so it is a hole. The hole is located at (-3,-1/7)
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deff fn [24]
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8 0
3 years ago
Triangle ABC is a right triangle and cos(22.6o)=b/13. Solve for b and round to the nearest whole number. Which equation correctl
Vladimir79 [104]

Answer:

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Step-by-step explanation:

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