jenajaaeRocks jenajaaeRocks

15-05-2016
Mathematics

contestada

If (m, 1) is on a circle with center (8, 1) and radius 7, what is a value of m?

A)m=1
B)m=-1
C)m=14
D)m=-8=-+sqrt33

Respuesta :

jpaterson jpaterson

15-05-2016

A) m=1

The equation for the circle is:

(x-8)^2 + (y-1)^2 = 49

If we take 'y' as 1, then

(x-8)^2 + 0 = 49

x-8 = √49

x = ±7 + 8

x = 15 or x = 1

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