Which expression is equivalent to 9x – 3y – 5x + 7y + x + y? a. 5x2 + 4y2 b. 4x + 4y c. 5x + 5y d. 10xy

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Which two undefined geometric terms always describe figures with no beginning or end?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)