When (2x-20)+86=0
2x-20=-86
2x=-46
x=-23
An obtuse angle is an angle that is in between 90 degrees and 180 degrees. It looks like this
Answer:
x = 28
Step-by-step explanation:
If the quadrilaterals are similar, there is a proportionality among their sides:
The top side in the large figure (70) is to the top side in the small figure (10) in the same ratio as the left side (x) in the large figure is to the left side in the small figure (4). This in math terms is written as:

We can then solve for the unknown "x" by multiplying both sides by 4:

Answer:
460
Step-by-step explanation: multiply all numbers to get your answer