A candle is 6.5 inches tall. The candle is lit and burns for a few hours. The height of the candle after the flame is blown out is 2.25 inches. The difference between the candle's two heights is

Relation of 12 inch candle height h with time t hours is :

h = 12 - 0.5t

Also, for 18 inch candle :

h = 18 - 2t

Let, after x hours height is same.

So,

So, after 4 hours height of the candles will be same.

Hence, this is the required solution.

Step-by-step explanation:

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

40 minutes

step-by-step explanation:

add the time and multiply by 2