Answer:
26.4 km/hr
Step-by-step explanation:
Sofia and Diego drive to work.
For Sofia
We convert miles to km
Sofia drives 72 miles in 1.5 hours.
1 mile = 1.6 km
72 miles = x
x = 72 × 1.6 km
x = 115.2 km
We find the speed in km/hr
Speed = Distance /Time
= 115.2km/1.5 hours
= 76.8 km/hr
For Diego
Diego drives 126 km in 2 hour 30 min.
Speed = Distance/Time
Time = 2 hour 30 min = 2.5 hours
Speed = 126km/2.5 hours
= 50.4 km/hr
The difference between their average speeds in km/h is calculated as:
76.8 km/hr - 50.4 km/hr
= 26.4 km/hr
Answer:
x is 30
Step-by-step explanation:
1/2 ( x + 6 ) = 18
1/2x + 3 = 18
- 3 - 3
1/2x = 15
· 2 · 2
x = 30
Answer:
Evan is not correct, because it seems like he thought 25 is 125% of 20. He did not spend 125% more time doing homework this week because it was like he added an extra 100% from his 25 hours of homework he did. Because of this 100% increase, the correct answer is actually 25%.
Step-by-step explanation:
THE CORRECT ANSWER IS 25%
This is not much of a question, because it doesn't take into account the width of the wood trim.
So you are asked to find the perimeter of the window, ignoring the width of the trim.
P = Perimeter = 2L + 2W.
Here, P= 2(9 1/3 feet) + 2(6 3/4 feet) = 2(28/3 feet) + 2(27/4 feet)
So P = 2[28/3 + 27/4] feet. LCD is 3*4 = 12.
Thus, P = 2 [ 28/3 + 27/4 ] feet. Can you finish? Add together the fractions 28/3 and 27/4.
Answer:
no
Step-by-step explanation:
