What is the solution to this system of equations? 2x - 3y = -27 -3x + 2y = 23 Options: (-3,7) (3,11) (7,-3) (-24,-7) If you could please show the steps you took, I'm struggling with these equations in general. So if you could it would be very helpful and appreciated!

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

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 two consexutive odd integers such that the sum of their square is 650