The little square means a right angle which is equal to 90 degrees.
X + 30 = 90
X = 60 degrees
No the angle of each piece should be 60 degrees, if the three pieces were to be 25 each that would only add to 75
Answer:
m = 7 - 3n
Step-by-step explanation:
m + 3n = 7
subtract 3n from both sides
m + 3n = 7
- 3n -3n
m = 7 - 3n
Answer:
24
Step-by-step explanation: