The actual wind resistance is also an independent lognormal random variable with a mean of 90 and standard deviation of 13.5. failure in the antenna will occur whenever the maximum wind pressure exceeds its wind resistance capacity. during a wind storm, what is the probability of failure of antenna?

answer: 0

step-by-step explanation: 21/7=3, so there is no change.

answer:

x = 471 ft

step-by-step explanation:

assuming a to be the man to the left of balloon, b to be the balloon and c to be the man to the right of balloon, we can write:

∠bac = 75°20'  

∠bca = 49°30'

∠abc = 180 - 75°20' - 49°30' = 55°10'  

ab = 400 ft

so basically we need to find the value of x, which is the opposite side to the angle of 75°20' using the law of sine:

x/sin(75°20') = 400/sin(55°10')  

x = 400 * sin(75°20') / sin(55°10')  

x = 471.44  

x = 471 ft

what is a parallelogram? a quadrilateral with both pairs of opposite sides parallel. if the diagonals of a quadrilateral   bisect each other, then the quadrilateral is a parallelogram.