Josh used 3/7 x 21 as a compatible number estimate for 3/7 x 20. is his estimate reasonable? why or why not?

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students