Answer: 3
Step-by-step explanation:
First Plug it in!!
15+-12 = 3
Always when you add a negative it is basically subtracting!!
Hope this help!!!
Answer:
3x+13
Step-by-step explanation:
-(x-2) =-x+2
3x+6+7
3x+13
Answer:
Step-by-step explanation:
13=3x+4
subtract 4 from both sides
9=3x
divide by 3
x=3
Answer:
3/4
Step-by-step explanation:
plug values in for x till you get it right
Use Pythagorean's Theorem to find the length of x.

so

and

. We can simplify that radicand down into a perfect square times a prime number, and that is

. 4 is a perfect square that can be pulled out as a 2, so the length of x is

, the choice on the top right.