Greg runs across country. He runs 5 miles in 40 minutes. He runs 20 miles in 160 minutes. If he keeps the same place, how long will it take him to run 15 miles?

41/17 as a decimal rounded to the nearest hundredth

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28