PLEASE ANSWER PLEASE! ASAP Which speed is the fastest? 180 miles/18 hours
240 miles/6 hours
90 miles/2 hours
30 miles/1 hour

It would be 90 miles/2, it's rate is 45 miles per hour

90 miles/2 hours

Step-by-step explanation:

180/8 = 22.2mph

240/6 = 40mph

90/2 = 45 mph

30/1 = 30 mph

45 mph is faster than every other unit rate, therefore 90 miles/2 hours  is the fastest.

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3