If a varies directly as b and a=4, when b = 2/5, find the equation that relates a and 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.

What value of x is in the solution set of 4x – 12 s 16 + 8x?

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl