Answer:
(x - 9) + (x + 3)
Step-by-step explanation:
To get the correct answer when factoring the numbers must add up to be the middle variable and multiply together to be the ending original number.
Sum of interior angles in a pentagon=540°
148+112+2x+2x+10+90=540
360+4x=540
4x=540-360
4x=180
x=180/4
x=45°
Answer:
There are 77 more third graders than second graders.
Step-by-step explanation:
415-338=x
x=77