How would you use coordinate geometry to prove that 2 line segments are perpendicular.

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

Arational number that is equivalent to -20/4?

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?