Olga simplifies the expression x+ 7 to 7x2. use the drop-down menus to complete the statements below to explain why olga's solution is correct or incorrect. clearcheck olga's solution is . x+ 7 is the same as . 7x 2 is the same as .x + 7 simplifies to .

Which ratio is equivalent to 10: 85

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

(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.)