Question

What is the equation of a circle whose center is at the origin and whose radius is 9?

x2 + y2 = 3
x2 + y2 = 9
x2 + y2 = 81

Answer 1

this is only 4 out of 15 i needed help on

Answer 2

what do you believe it is james?

Answer 3

the middle one

Answer 4

i go with 3rdone

Answer 5

Same here

Answer 6

cause half of 81 is 9 and radius is always a half of a number

Answer 7

ok thanks yall man id be lost without you

Answer 8

no problem we are trying to help lol

Answer 9

how much more do you have?is this online class or soehing?

Answer 10

@Janu16 you know what to do or somebody medal @Keigh2015

Answer 11

keigh has to medal you cause i medaled him

Answer 12

i dont need a medal

Answer 13

ok

Answer 14

are you posting more?

Answer 15

yes