Hiking trail for Guadalupe mountains national park use a scale in which 2 cm represents 5 km. There are 130 km of hiking trails in the park. How many centimeters of hiking trails are on the map?

The total number of dental clinics total for the last 12 months was recorded

A+b= 17, ab=70, find the value of |a-b|

As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?