Answer: a) 15 1/2 hours
Step-by-step explanation :
1/2 ×2=1. 1×4=4 1 1/2 ×1= 1 1/2 2×2=4. 2 1/2 ×2= 5
Add all answers and you have 15 1/2 hours.
Answer: 15
Step-by-step explanation:
12^2 + 9^2 = 225
square root of 225 = 15
I hope someone sloves your problem :)