Edward rewrote the product of two rational expressions to show the multiplication of the numerators and denominators. his work is shown below

what is the product of the rational expressions?
the answer is b

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

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

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup