That's two questions.
The answer to the second question is: Yes.
The answer to the first question is:
Multiply 60 miles per hour by ' 1 ' a few times. Use fractions that have
the same thing on top and bottom, since those are always equal to ' 1 '.
Then cancel units if the same unit is on the top and the bottom.
Here's how it goes:
(60 mi/hr) x (5280 ft/mile) x (1hr/3600 sec) = (60 x 5280 / 3600) ft/sec = <u>88 ft/sec</u>
Answer:
12.7 years to the nearest tenth.
Step-by-step explanation:
The total of the ages for the 25 students = 10*25 = 250.
For the 30 students it is 15*30 = 450.
The average for the 2 classes = (250 + 450) / (25 + 30)
= 700 / 55
= 12.7 years to the nearest tenth.
3/5 of 42000 is 25200 so the amount of people who did not vote is 16800 because the beginning amount of 42000 subtracted from 25200 gives you the final answer
If that's confusing the answer is 16800 votes didn't pick the winner
Answer:
Version "B"
Step-by-step explanation:
All the Version "A"s are higher than Version "B"s.
Consider 
, where ![x \in [-1,1]](https://tex.z-dn.net/?f=x%20%5Cin%20%5B-1%2C1%5D)
.
This means there exists a ![\theta \in [0, \pi]](https://tex.z-dn.net/?f=%5Ctheta%20%5Cin%20%5B0%2C%20%5Cpi%5D)
such that 
and 
.
Thus, taking the inverse cosine of both of these equations, we get that:
.
Subtracting arccos(x) from both sides, we get the required result.
