A placement exam for entrance into a math class yields a mean of 80 and a standard deviation of10. The distribution of the scores is roughly bell-shaped. Use the Empirical Rule to find thepercentage of scores that lie between 60 and 80.

Which system of linear inequalities is represented by the graph?

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.

Find the value of x. give reasons to justify your solutions! l, m ∈ kn