Question

question 6 (5 points)
listen
the pony express was a mail delivery system in the old west that used a series of men on horseback to deliver mail from st. joseph, mo to sacramento, ca along a trail that was 2000 miles long. true or false: if each rider traveled 100 miles, got a fresh horse every 10 miles, and maintained an average speed of 10 mi/hr, it took 150 horses for each delivery.
true
false
question 7 (5 points)
listen
a racehorse is running with a uniform speed of 69 km/hr along a straightaway. what is the time it takes for the horse to cover 400 meters?
21 seconds
2.1 minutes
0.35 hours
27.6 hours

Explanation:

Step1: Calculate the number of horses per rider

Each rider travels 100 miles and gets a fresh horse every 10 miles. So the number of horses per rider is \(\frac{100}{10}=10\) (since the starting horse is also counted).

Step2: Calculate the total number of horses for the delivery

The trail is 2000 miles long and each rider travels 100 miles. So the number of riders is \(\frac{2000}{100} = 20\).
Since each rider needs 10 horses, the total number of horses is \(20\times10=200
eq150\).

Answer:

False