Answer:
60
Step-by-step explanation:
All the sides are equal, which makes it an equilateral triangle.
That means all the angles are equal
180/3 = 60
Angle A is 60 degrees
Answer:
37
Step-by-step explanation:
10z - 3 = 10(4) - 3
=40-3
=37
Answer:
He subtracted incorrectly
Step-by-step explanation:
You multiply 42.75 x 4 and get 171. Then you add 171+52.45=223.45 and then you subtract 223.45-18=205.45 and then you multiply 223.45 x .3333 = 68.3265 or 68.33 (rounded)