Fwee poitns 4.1\times 10^{-2}-7.9\times 10^{-3}4.1×10 −2 −7.9×10 −3 plz simplify this expresion down to scintific noation form

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Which of these figures must be a rectangle?