Answer:
36
Step-by-step explanation:
Use PEMDAS:
2*10 is 20
2*2 is 4
So the equation is now
2+20+4+10=
Now add:
36
Thus the solution is 36
Hope this helps!
Answer:
143
Step-by-step explanation:
90-53=37
180-37=143
Answer:
-9 minus -3
Step-by-step explanation:
-9 - (-3) = -9 + 3 = -6
Subtract and keep the sign of the bigger number.
Answer:
All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum of all the angles is 1260 degrees (from above)... And there are nine angles... So, the measure of the angle of a regular nonagon is 140 degrees.
Step-by-step explanation:
