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vodka [1.7K]
3 years ago
9

What are the center and radius of the circle defined by the equation ?

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
8 0
It might be B im not sure

Andrew [12]3 years ago
8 0
X^2 - 6x + y^2 + 8y + 21 = 0
(x - 3)^2  - 9 + (y + 4)^2 - 16  = -21

(x - 3)^2 + (y + 4)^2 =  -21 + 9 + 16 =  4

so center is at (3,-4) and radius = sqrt4 = 2

Answer is A

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An angle measures 58° more than the measure of a supplementary angle. what is the measure of each angle?
JulsSmile [24]
The measure will be 122 cause all you have to do is subtract 180 from 58 and you will get your answer cause a supplementary angle is an obtuse so thats 180 so you would have to subtract then two amd you will get your answer !!

3 0
3 years ago
Please someone help me with this! Math
Helga [31]

Answer:

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6 0
3 years ago
Justice lived in Germany and Hollands for a total of 24 months in order to learn German. He learned and average of 120 words per
lesantik [10]

Answer:

Justice lived in Germany for 15 months and he lived in Holland for 9 months.

Step-by-step explanation:

1. You must make a system of equations:

\left \{ {{x+y=24} \atop {120x+220y=3780}} \right.

Where x is the number on months he lived in Germany and y is the number on months he lived in Holland.

2. You can solve this system of equations by using the Elimination Method. If you multiply the first equation by -120, you can cancel the variable x when you add both equations, and then you can calculate y. When you obtain the value of y, you can substitute it into one of the original equations and solve for x. Then:

 \left \{ {{-120x-120=-2880} \atop {120x+220y=3780}} \right.

100y=900\\y=9

x+y=24\\x+9=24\\x=15

7 0
3 years ago
Which pairs of matrices are inverses?
goblinko [34]

Answer:

B is the answer

Step-by-step explanation:

5 0
3 years ago
the diameter of a cylindrical box of CDs is 5 inches. The height of the box is 4 inches. Whuch measurement is closest to the tot
sineoko [7]
To find area you simply multiply 5 and 4 which is 20
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