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OpenStudy (anonymous):
actually help isn't needed I just want to make sure my answer is correct
26
not enough information is given
56
34
OpenStudy (anonymous):
I think the answer is B because we don't have anymore info right?
OpenStudy (here_to_help15):
do u need my help :P
OpenStudy (anonymous):
if you could help that would be great
OpenStudy (here_to_help15):
x=26 : ) just worked it out now :p
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OpenStudy (anonymous):
wait how?
OpenStudy (here_to_help15):
By knowing that the diagonals of a rhombus are each other's perpendicular bisectors, we conclude that they intersect at right angles. So, angle WSX has measure 90 degrees. So, we solve 3x+12=90 for x, which gives us x=26.
OpenStudy (here_to_help15):
is that all : P
OpenStudy (anonymous):
OH! okay! thank you!/
OpenStudy (anonymous):
do you think you can help me with another one?
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OpenStudy (here_to_help15):
yeah sure : )
OpenStudy (anonymous):
The time required to finish a test in normally distributed with a mean of 80 minutes and a standard
deviation of 15 minutes. What is the probability that a student chosen at random will finish the test in more
than 110 minutes?
16%
34%
82%
2%
if you can't it's okay i'll post it up.
OpenStudy (anonymous):
i have no idea how to do normal distribution
OpenStudy (here_to_help15):
ok : P
OpenStudy (anonymous):
which i think that's what's happening here
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