Arunner did the 100 meter dash in 9.9 seconds and the 100 yard dash in the same amount of time . in which race did he run the fastest ?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1