Alex is planning to surround his pool abcd with a single line of tiles. how many tiles will he need to surround his pool? round your answer to the nearest hundredth.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Let event a = you roll an even number on the first cube.let event b = you roll a 6 on the second cube.are the events independent or dependent? why?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?