Bob is hiking down a 15-mile country trail. He could hike at 5 mph for the first 2 hours and then go the rest of the way at 3 mp h or he could just go the whole way at 4 mph. How long would each of these options take? Which option is the faster?
2 answers:
Answer:
the fastest is starting at 5 mph then going three because it would take 3.66666666667 hours
Step-by-step explanation:
the 4mph would take 3.75 hour while the 5mph then 3mph only takes 3.666666667
Answer:
The First Option: 3 2/3 hours
The Second Option: 3 3/4 hours
The First Option is fastest.
Step-by-step explanation:
<h2>Option 1: </h2>
First part- 5mph for 2 hours 5·2=10 (D=T·S)
15-10=5 because 15 is the total distance and 10 is the first part.(T=D/S)
Second part- 5/3= 1 2/3
5/3 because 5 is the distance left, and 3 is the speed. The time is 1 2/3 hours.
<h2>Option 2:</h2>
4mph 15m (T=D/S)
15/4= 3 3/4 hours
You might be interested in
Answer:
103
Step-by-step explanation:
I think 2 triangular prisms.
Answer:
Should be 39 years.
there is 12 inches in a foot. and if the tree grows 4 inches every year, then in 3 years the tree would be 1 foot. 13 x 3 = 39, thus proving that in 39 years, it will be 13 feet tall. I may be wrong but this sounds correct.
Answer:
option D
60√3 - 21√6
...........
Answer:
Mimi is 15.
Step-by-step explanation:
Set up two equations, and solve by elimination.
2(m+5) = d+5
- 3(m-5) = d-5
_____________
2(m+5) - 3(m-5) = 10
2m + 10 - 3m + 15 = 10
-m + 25 = 10
-m = -15
<u>m = 15 </u>
Plug this back in to get dad's age.
2(m+5) = d+5
2(15+5) = d + 5
2(20) = d + 5
40 = d + 5
<u>d = 35 </u>
<u>
