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?
multiply the first equation by -3 would give you
-12x + 18y = -6
to eliminate x on the second equation, you would need 12x to cancel the -12x on the first equation
what number times 3x woud give you 12x? the answer would be 4.
lets multiply equation 2 by 4 to see what happens
12x + 20y = 44
so 12x will cancel -12x on the first equation
given that a ball is thrown verically upwards with an initial velocity. we know that the path is a trajectory as a parabola.
from graph we find that horizontal is in yards and vertical is in feet.
we have to find the coordinates of a
when ball is thrown upward, acceleration due to gravity is -32 ft/s^2
since height = s=+h0
we get h0 as initial height.
but without any calculation from the graph we find out these coordinates as
x coordinate = 2.5(since in the middle of 0 and 5)
y coordinate = 10.5(since in the middle of 9 and 12)