Let a and b be rational numbers. Is a - b rational or irrational?

The area of a circle is less than 1 dm². Find the radius of the circle.

The temperature change in a chemistry experiment was - 2°C every 30 minutes. The initial temperature was 6°C. What was the Temperature after 4 hours?

A regular poligon has an odd number of sides. Which statement is true about the lines of reflection for the polygon that will map the shape onto itself

Over the course of 8 races, a runner's finishing time was 5 seconds faster each race than the race prior. if her combined total for all 8 races was 44:20, what was her finishing time for the second race?

What is - 3/8 divided by (-1/4)

The solutions of a quadratic equation are 5 and - 1. What is the factored form of a related quadratic function?

A varies directly as b. If A = 3 when b = 24, find b when A = 10

What factors multiply to - 27 and add to 6

10. 3y + 2 + 2 y + 5 =

1/4 x - 2>1 and the grater than sign has a line under it.