Answer:
Step-by-step explanation:
Answer: B) 40 miles per hour
Step-by-step explanation:
Each twelve minutes is 1/5 hr = 0.2 hr
Total time is therefore 1 hr+ 0.2hr = 1.2hr
Vavge = 48 miles / 1.2 hr = 40 miles/hr
The answer is A. 14 and 15
Answer: 75 students.
Step-by-step explanation:
In the data set we have a total of 10 + 8 + 7 + 5 = 30 students.
of those, 10 want to go to the park, the percentage is:
(10/30)*100% = 33.3%
Then, out of the 225, we can expect that a 33.3% (or 0.333 in decimal form) want to go to the park, this is:
N = 225*0.333% = 74.925
We can roud it up, and get N = 75
So Sally can expect that 75 students want to go to the park
