Bob is building a wooden cabin. The cabin is 30 meters wide. He obtained a bunch of 17 meters long wooden beams for the roof of the cabin Naturally, he wants to place the roof beams in such an angle that each of opposite beams would meen exactly in the middle What is the angle of elevation, in degrees, of the roof beams? Round your final answer to the nearest tenth

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

(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.)

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?