1. joshua has a ladder that is 11 ft. long. he will lean the ladder against a vertical wall. for safety reasons, he wants the angle the ladder makes with the ground to be no greater than 65°. is it possible for joshua to lean the ladder against the wall so that the top of the ladder is at least 10 ft. above the ground? show your work and draw a diagram to support your answer.
i don't understand this at all. i'm so frustrated plz . with the diagram.

Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)

Simply 8x squared + 5(7x squared- x) - 2x =

(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.)