Answer:

Step-by-step explanation:

Since, we are asked to find the value of x . move 15 to right hand side and change its sign.
⇒ 
Add the numbers : 8 and 15
⇒ 
The value of x is 23.
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-TheAnimeGirl
Answer:
7 hours
Step-by-step explanation:
Because ten minus two is seven
Answer:
range is 9
Step-by-step explanation:
Answer:
120
Step-by-step explanation:
There are 5 ways to choose the first position, 4 ways to choose the second and so on until we get only 1 way to choose the last position, therefore the answer is 5! = 5 * 4 * 3 * 2 * 1 = 120 ways.