for each question determine whether is true for all, some, or none values of x, 3x=x+8, 2(x-5)=2x-5. Explain your reasoning

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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.