there are 180 pupils in a school 30 puplis wear glasses what is the ratio of people who wear glasses to pupils who dont wear glasses​

Carter drank 15.75 gallons of water in 4 weeks. he drank the same amount of water each day.a. estimate how many gallons he drank in one day.b. estimate how many gallons he drank in one week.c. about how many days altogether will it take him to drink 20 gallons?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?