What is the common difference between the elements of the arithmetic sequence below?
-18, -22.5, -27, -31.5, -36

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

Select the lengths in centimeters that would form a right triangle

Identify the number 127 as a rational or irrational. explain