Find the 21st term in the following arithmetic sequence :
-1, -3, -5, -7,...
Hint: Write a formula to help you.
1st term + common difference(desired term – 1)

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

Icould really use some with this question.

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36