What is the radius and diameter of the following circle 13cm

Cody worked 42.5 hours per week in july. this is 12.25 hours more per week than he worked in june. how many hours did cody work per week in june?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Need asap. solve for the following inequality