Answer:
6
Step-by-step explanation:
Deisha's build rate = 1 fence per 15 hours = 1/15 fences per hour
Travis's build rate = 1 fence per 12 hours = 1/12 fences per hour
Working together, their combined rate is 1/15 + 1/12 = 3/20 fences per hour
So it takes them 20/3 = 6 2/3 hours per fence
Answer:
90.5
Step-by-step explanation:
Velocity is a time-derivative of displacement or the height, in this case.
At maximum height, the velocity is 0 and the height is 128.
Substitute these values into both equations above,
From the first equation,
Substitute for 
.
Answer: 2(11-6) + 3/4
Step-by-step explanation:
2(11-6) + 3/4
Divide off -3 from both sides, that leave you with:
n + 5 = -4
Subtract the 5 to the other side
n = -9
Answer:
56
Step-by-step explanation:
Because there are 8 names and when you choose a name there are 7 people that can be a pair so 7*8=56
