If it took carlos 1/2 hour to cycle from his house to the library yesterday, was the distance that he cycled greater than 6 miles? (note: 1 mile = 5280 ft)
(1) the average speed at which carlos cycles from his house to the library yesterday was greater than 16 feet per second.
(2) the average speed at which carlos cycles from his house to the library yesterday was less than 18 feet per second.

Step-by-step explanation:

Given

time taken by Carlos to cycle is

For case (1)

Average speed

For

Distance traveled

Therefore Carlos might not be able to cover 6 miles with average speed of  16 ft/s

(2)

for 0.5 hr

distance traveled

Therefore Carlos might be able to cover more than 6 miles with

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

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step-by-step explanation:

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