What is the net force on an object when you combine a force of 20 N north with a force of 5 N south?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Acircle has a circumference of 28.36 units what is the diameter of the circle

How can (square root of 25) ^2 be rewritten?