Answer:
12.5 feet
Step-by-step explanation:
He only needs 10/12 of a 15 foot long piece of wood. We need to find 10/12 of the length of the wood.
That is:
10/12 * 15 = 12.5 feet
He only needs 12.5 feet of the piece of wood.
The odd-numbered terms are

, while the even-numbered terms are

, so one formula for the sequence is

where

.
Answer:
Endless
Step-by-step explanation:
There are endless possibilities for x, because 1 to the power of any x will always be 1.
Here is what you have to do first, combine like terms. On the left side do x-3x (you can do 1x-3x because x is just 1 variable, so I can see why you put 1x instead of x). Then combine -3-1. Then add the x answer on the left side to the 2x on the other side then you can figure out the rest. The reason why I want you to figure out the rest is because I'm just helping you and you need to get the answer yourself.
Simplified
2x^2 - 4x + 12