Answer:
x=65
Step-by-step explanation:
x+10+x-20+x+25=3x+-15
3x-15=180
3x=195
x=65
The answer to this question is a very simple one indeed do not sweat it my friend I will make sure it is answered, the and
answer is 16
Answer:
x=-4/5 and 2
Step-by-step explanation:
since it is absolute value, 5x-3 can = 7 or negative 7
5x-3=7
5x=10
x=2
or
5x-3=-7
5x=-4
x=-4/5
Answer:
900
Step-by-step explanation:
The sum of the interior angles of a polygon with n sides is given by the formula:

The polygon given has 7 sides. Substitute 7 for n. Thus:

The sum of the interior angles is 900 degrees.