Answer:
26 2/3
Step-by-step explanation:
Average speed is total distance divided by total time.
The time for the first trip was ...
(90 mi)/(20 mi/h) = 4.5 h
The time for the return trip was ...
(90 mi)/(40 mi/h) = 2.25 h
Then the average for the trip and return is ...
total miles/total time = (90 +90)/(4.5 +2.25) = 26 2/3 . . . . mi/h
The average speed for the round trip was 26 2/3 miles per hour.
X - 3/8 = 13/2
Add 3/8 to both sides:
X = 13/2 + 3/8
Rewrite 13/2 to have 8 as the denominator:
13/2 x 4 = 52/8
X = 52/8 + 3/8
X = 55/8
(10 - 5 2/3)(-2) + x = 8 + 2/3
(4 1/3)(-2) + x = 8 2/3
-8 2/3 + x = 8 2/3
x = 8 2/3 + 8 2/3 = 17 1/3
The answer is 8 days.
4/5 divided 1/10
4/5 x 10/1
40/5 = 8
Answer:
69 pennies
Step-by-step explanation:
Below is the given data:
Pennies at the starting of February = 34
Pennies in 1st week of February = 13
Pennies in 2nd week of February = 9
Pennies in 3rd week of February = 6
Pennies in 4th week of February = 7
To find the number of pennies at the end of February just add all the pennies.
At the end of February, the number of pennies = 34 + 13 + 9 + 7 +6 = 69 pennies
