Answer:
Step-by-step explanation:
23 divided by X. X=half of 23. but really, you need to add to it. other than that i can't help ya, all i know is that half of 23 is 11.5
Answer:
Step-by-step explanation:
14 coins. 140/10 = 14 :) Hope this helped!
For this case we must solve the following equation:

To solve we follow the steps below:
We square both sides of the equation squared:

We choose the positive value because we talk about $. 
Answer:
$6
4. is correct
5. A is correct
6. B is correct