NEED HELP PLZGeorge and John travel 392 miles in 7 hours. If they travel at the same rate, how long will it take them to travel 728 miles? a) Find their rate: mph

b) It took them hours to travel 728 miles

Step-by-step explanation:

a. Find the unit rate, or how many miles they traveled in one hour, by dividing:

b. Now that we know how fast they were going, we can use it in either a proportion or in the d = rt equation. For the proportion set up, put miles on the top and hours on the bottom and solve for the unknown:

and cross multiply to solve for x:

56x = 728 so

13 hours.

Now use the d = rt equation:

728 = 56t so

t = 13 hours

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

hreryryrranswer:

step-by-step explanation: