Question

If r>0 and r^t=6.25r^t+2, then r =?

Answer 1

what have you tried?

Answer 2

Nothing i dont even know how to start the problem

Answer 3

move all the like terms to one side of the equation

Answer 4

err... is this r^t = 6.25r^(t+2)
or r^t = 2+6.25r^t

Answer 5

is the exponent on the r on the right hand side 't' or 't+2' ?

Answer 6

its the first way that you had it

Answer 7

you sure?

Answer 8

yes its r^t+2

Answer 9

ok this is pretty trivial then... use the rule
\[x ^{a+b} = x ^{a}x ^{b}\]

Answer 10

on \[r ^{t+2}\]

Answer 11

What do i do after that

Answer 12

\[r ^{t} =6.25r ^{2}r ^{t}\]

Answer 13

r^t is a factor on both sides of the equation...

Answer 14

\[1=6.25r ^{2}\]

Answer 15

ok?

Answer 16

ok but what happens to the r^2

Answer 17

solve for r now:)

Answer 18

got it?

Answer 19

yes thank you!!

Answer 20

sure!