Jack walked 2/3 of a mile in 1/2 of an hour. how long will it take jack to walk one mile?

Step-by-step explanation:

distance = rate * time

rate = distance / time

     = 2/3 mile divided by 1/2 hour

     = 2/3 * 2/1 = 4/3 mph = 1 and 1/3 mph

His speed is 4/3 mph = 1 and 1/3 mph = 1.3 mph

So

 1 mile = (4/3 mph) * TIME

Solving for Time T, it will take him t = 3/4 <--- the RECIPROCAL

            and 3/4 hour = 45 minutes

Jack walks 1 mile in 45 minutes = 3/4 hour

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb