Triangles have 3 vertices. The total is 21 vertices. 21 / 3 = 7. He drew 7 triangles.
Answer:
2m - 11
Step-by-step explanation:
twice m = 2m
decreased by 11 = -11
Answer:
15Step-by-step explanation:y = family members = 7x = cos
Step-by-step explanation:
Answer:
460
Step-by-step explanation: multiply all numbers to get your answer