The sum of a rational number and an irrational number is what?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?