What does mean median mode and range mean in math terms?

What is the perimeter of square abcd? units units 28 units 37 units

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.

The square root of 9x plus 7 plus the square rot of 2x equall to 7