To find out how many pages Brian can read in 3.5 hours, we need to set up a proportion.
The ratio of pages read to hours is constant, since Brian can read the same number of pages per hour.
So we can set up the proportion:
80 pages / 2 hours = x pages / 3.5 hours
To solve for x, we can cross multiply:
2 hours * x pages = 80 pages * 3.5 hours
2x = 280
Dividing both sides by 2:
x = 140
Therefore, Brian can read 140 pages in 3.5 hours.
So the answer is 140 pages.
Brian can read 80 pages in 2 hours. How many pages can he read in 3.5 hours? (1 point)Responses11.43 pages11.43 pages140 pages140 pages560 pages560 pages45.71 pages45.71 pages
7 answers
In 10 seconds, the surface of the earth at the equator has moved 4,600 meters. How far has the surface moved in 150 seconds?(1 point)
Responses
306.67 meters
306.67 meters
69,000 meters
69,000 meters
6,900,000 meters
6,900,000 meters
3.07 meters
Responses
306.67 meters
306.67 meters
69,000 meters
69,000 meters
6,900,000 meters
6,900,000 meters
3.07 meters
To find out how far the surface of the earth has moved in 150 seconds, we can set up a proportion.
The ratio of distance moved to time is constant, since the surface of the earth moves at a constant speed.
So we can set up the proportion:
4,600 meters / 10 seconds = x meters / 150 seconds
To solve for x, we can cross multiply:
10 seconds * x meters = 4,600 meters * 150 seconds
10x = 690,000
Dividing both sides by 10:
x = 69,000
Therefore, the surface of the earth has moved 69,000 meters in 150 seconds.
So the correct answer is 69,000 meters.
The ratio of distance moved to time is constant, since the surface of the earth moves at a constant speed.
So we can set up the proportion:
4,600 meters / 10 seconds = x meters / 150 seconds
To solve for x, we can cross multiply:
10 seconds * x meters = 4,600 meters * 150 seconds
10x = 690,000
Dividing both sides by 10:
x = 69,000
Therefore, the surface of the earth has moved 69,000 meters in 150 seconds.
So the correct answer is 69,000 meters.
Grace ran a 26-mile marathon in 4 hours. How far did Grace run in 1.5 hours?(1 point)
Responses
69.33 miles
69.33 miles
156 miles
156 miles
4.33 miles
4.33 miles
9.75 miles
9.75 miles
Responses
69.33 miles
69.33 miles
156 miles
156 miles
4.33 miles
4.33 miles
9.75 miles
9.75 miles
To find out how far Grace ran in 1.5 hours, we need to set up a proportion.
The ratio of distance ran to time is constant, since Grace runs at a constant speed.
So we can set up the proportion:
26 miles / 4 hours = x miles / 1.5 hours
To solve for x, we can cross multiply:
4 hours * x miles = 26 miles * 1.5 hours
4x = 39
Dividing both sides by 4:
x = 9.75
Therefore, Grace ran 9.75 miles in 1.5 hours.
So the correct answer is 9.75 miles.
The ratio of distance ran to time is constant, since Grace runs at a constant speed.
So we can set up the proportion:
26 miles / 4 hours = x miles / 1.5 hours
To solve for x, we can cross multiply:
4 hours * x miles = 26 miles * 1.5 hours
4x = 39
Dividing both sides by 4:
x = 9.75
Therefore, Grace ran 9.75 miles in 1.5 hours.
So the correct answer is 9.75 miles.
In 5 hours the Acela Express, the fastest train in North America, traveled 775 miles. How far did it travel in 8 hours?(1 point)
Responses
Responses
To find out how far the Acela Express traveled in 8 hours, we can set up a proportion.
The ratio of distance traveled to time is constant, since the train travels at a constant speed.
So we can set up the proportion:
775 miles / 5 hours = x miles / 8 hours
To solve for x, we can cross multiply:
5 hours * x miles = 775 miles * 8 hours
5x = 6200
Dividing both sides by 5:
x = 1240
Therefore, the Acela Express traveled 1240 miles in 8 hours.
So the correct answer is 1240 miles.
The ratio of distance traveled to time is constant, since the train travels at a constant speed.
So we can set up the proportion:
775 miles / 5 hours = x miles / 8 hours
To solve for x, we can cross multiply:
5 hours * x miles = 775 miles * 8 hours
5x = 6200
Dividing both sides by 5:
x = 1240
Therefore, the Acela Express traveled 1240 miles in 8 hours.
So the correct answer is 1240 miles.