12. A reindeer runs 20 miles in 3 hours. At that rate, how many miles does it run in 1 hour? Use the drop-down menu to complete the answer.
The reindeer runs
miles in one hour.
1)3 1/4
2)6 3/4
3)12 1/4
4)60 3/4

6.6 repeating or 6 and 2/3

Step-by-step explanation:

you would have to do 20 divided by 3 to find the unit rate.

20 / 3 = 6.6 repeating or 6 and 2/3  

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

step-by-step explanation: