QR=4, VS=9, QS=6, SR=8

What signals you that factoring by grouping is the best method to use when factoring a problem?

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

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?