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3 years ago

Match the pairs of equations that represent concentric circles

Mathematics

1 answer:

timama [110]3 years ago

3 0

Answer:

The 3rd equation on the left column and second one on the right column.

Step-by-step explanation:

These 2 equations have same coefficients of x and y if we divide the first one by 4 and the second by 2.

This gives the 2 equations

x^2 + y^2 - 4x + 6y - 7 = 0

x^2 + y^2 - 4x + 6y - 20 = 0

If we compete the square on these we get

(x - 2)^2 + (y + 3)^2 = 20

(x - 2(^2 + (y + 3)^2 = 33

These are in standard form . The center is the same (2, -3) but the radii are different so they are concentric.

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Hello!

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3 years ago

A florist has 54 white roses, 72 red roses, and 108 pink roses. If he makes the greatest number possible of identical bouquets u

drek231 [11]

Find the greatest common factor of each flower:

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3 years ago

NEED THE ANSWER ASAP! Find the measure of the missing angle X

jasenka [17]

Answer:

50°

In order to determine the unknown angle, be sure to use the total sum of 180° 

120° - 180°= 60° ( this give you the red side inside the triangle)

Then you simple add the two number inside the triangle

60° + 70° = 130°( then you use this to find the missing corner by subtracting from 180°)

180°- 130° = 50° this is your missing angle X"

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marishachu [46]

Answer:

the function's period

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