Question

(x-5)2+(y+202=64 what is the radius of the circle

Answer 1

what is the equation?

Answer 2

(x-5)2+(y+2)2=64

Answer 3

you're kinda missing a parentheses :)

Answer 4

hehe

Answer 5

yea i know lol; sorryyyyy :)

Answer 6

you cant solve with that equation

Answer 7

its asking for the radius of the circle

Answer 8

and i have no idea what im doing

Answer 9

Is that two being multiplied or divided?

Answer 10

its the exponent

Answer 11

sorry didnt know how to put it as the exponent

Answer 12

http://www.mathwarehouse.com/geometry/circle/images/equation-of-circle/general-formula-equation-of-circle.png

Answer 13

Oh then the radius of the circle would be the square root of what it equals, so it would be the square root of 64. So the radius is 8

Answer 14

thank you so much

Answer 15

if the radius of the earth is approximately 6000 km, the part of earth that that recieves signals from satellite has an area of how many square kilometers? use 3.14

Answer 16

???

Answer 17

ahemm

Answer 18

can you help me plz ? lol id seriously appreciate it

Answer 19

http://0.tqn.com/d/math/1/0/I/F/spherer.gif

Answer 20

i suck horribly @ math

Answer 21

see the "sphere formula" up there, all you need is "r" to get the surface area, now a satellite covers only 1 part of it, the part that's facing it off, the other part, the "dark side of the sphere" per se, the satellite signals can't get there.

So once you get the surface area, just divide by 2 :)

Answer 22

thanks; can you keep helping :)

Answer 23

sure, but keep in mind this slot is 'closed', just post a 'new' question in the channel, so we can all see it right away :)

Answer 24

thanks :)

Answer 25

just bumped it