Question

Please helppp! 

Answer 1

(a) answer : a,d,e

(b) answer : b)22L=5.8gal

(c) answer : b)25ft/min

1.  Convert meters per second to kilometers per hour,  

1 kilometer = 1000 meters

1 meter = $\frac{1}{1000}$

1 hour = 60 minutes. it means $\frac{60 minutes}{1 hour}$

1 minute = 60 seconds. it means $\frac{60 seconds}{1 minute}$

so $\frac{1}{1000}$ , $\frac{60 minutes}{1 hour}$ and $\frac{60 seconds}{1 minute}$  are the conversion factors  used.

(2): Convert 22 Liters to gallons

1gal=3.8L

1 litre = $\frac{1}{3.8}$ gallons

22 litre =  $22* \frac{1}{3.8}$ gallons= 5.8 gallons

(3)Convert 5 inches per second to feet per minute.

We know 1 feet = 12 inches  and 1 minute = 60 seconds

1 inches per second = $\frac{1}{12} * \frac{60}{1}$= 5 feet per minute

5 inches per second  = 5 * 5 = 25 feet per minute