The mean if 4 consecutive even number is 15

Mathematics

1 answer:

N76 [4]3 years ago

8 0

Cant get any number without a decimal other than that none work

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Write an equation for a circle with a center at (9 -2) and has a radius of 7.

fenix001 [56]

The equation of a circle is given as:

(x-a)^2 + (y- b)^2 = r^2 where (a, b) is the center.

(x-9)^2 = x^2 -18x + 81 - ----(i)
(y+2)^2 =y^2 + 4y +4 ------ (ii)
r^2 = 49 ------ (iii)

Adding equation (i) and (iii)
x^2 + y^2 - 18x + 4y + 85 -----(iv)

Equating equation (iv) and (iii)

x^2 + y^2 - 18x + 4y + 85 = 49

Arrange the equation:

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I hope this helps

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