The correct answer would be B. 72 degrees
Answer:
c
Step-by-step explanation:
I subtracted 180 with 75 and I got 105.
Y - 3x = 7 . . . . . . . . (1)
21 + 9x = 3y . . . . . .(2)
From (1), y = 3x + 7
substituting for y into (2), we have
21 + 9x = 3(3x + 7) = 9x + 21
0 = 0
Therefore, the system has an infinte number of solutions.
Answer:
66 cm
Step-by-step explanation:
Diameter (d) = 21 cm
