Jack drove 39 1/2 miles he used 1 1/4 gallons of gasoline what is the unit rate for miles per gallon

31.6 miles per gallon

Step-by-step explanation:

Given that:

Miles driven = 39 1/2 miles

Gallons of gasoline used = 1 1/4 gallons

The unit rate for miles per gallon :

Total miles driven / gallons of gasoline used

39 1/2 ÷ 1 1/4

79/2 ÷ 5/4

79 /2 * 4/5

(79 * 4) / 10

316 / 10

= 31.6 miles per gallon

18a

step-by-step explanation:

simply because it is. it's the highest common factor

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: