A building has two sizes of apartments, small and regular. The ratio of small apartments to regular apartments is 17 to 3. What percent of apartments in the building are small?

85%

Step-by-step explanation:

small : large = 17 : 3

this means that 17 out of 20 are small

17/20 = 85/100, which is 85%

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2