mr harris decides to visit his friends on his first day he walks 2 miles away from his house to visit san for 1 hour then 3 miles further to see mary for 2 hours and then walks home over the next 2 hours graph mr harris distance from home

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

What is the difference between regular convex and concave polygons

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.