Radius of a circle whose diameter is d=7.2

For circles, the radius is just half the diameter. So for instance if a diameter is 10, the radius is 5. In this case the diameter is 7.2, so all you have to do is divide it by 2 and you get your radius:

7.2 / 2 = 3.6

Hope that explains it for you!

Radius = 3.6

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8