Answer:
m∡ZA = 51°
m∡ZB = 39°
Step-by-step explanation:
∡ZB = 'b'
∡ZA = '12 + b'
b + 12 + b = 90
2b + 12 = 90
2b = 78
b = 39
12 + 39 = 51
Answer:13.5
Step-by-step explanation: 6:9
9:?
divide both by 3 2:3
now multiple 4.5. 9:13.5
Answer:
true
Step-by-step explanation:
1st way- 3^2 * 3^3
2nd way- 3 * 3^4
3rd way- 3^0 * 3^5