Dawn and lin took off on skateboards from the same location but traveled in opposite directions. after 20 minutes, dawn had traveled 6.42 kilometers and lin had traveled 7.7 kilometers. how far apart were they?

14.12 km

Step-by-step explanation:

Distance of Dawn = 6.42 km

Distance from Lin = 7.7 km in the opposite direction.

If they went in opposite directions then they were moving away from each other.

Therefore, the final distance between the two can be written as follows:

d = 6.42 + 7.7 = 14.12 km

After 20 minutes Dawn and Lin were 14.12 km away.

Total cost =28.575

Step-by-step explanation:

wev  are given

total Food cost=$22.50

cameron gave 9% meal tax of his total meal price

total meal price without tax is $22.50

9% of $22.50 will be

9% meal tax=22.50*9/100=2.025

he gave 18% tip of his total food cost without tax that is $22.50

18% of $22.50 will be

18% tip=22.50*18/100=4.05

for total meal cost we will add all costs and total cost will become

Total cost =22.50+2.025+4.05 =28.575

Answer=28.575