Wanda started walking along a path 27 seconds before dave .wanda walked at a constant rate of 3 feet per second. dave walked along the same path at a constant rate of 4.5 feet per second. how long after dave starts walking will he catch up with wanda.?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 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 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.