Answer:
0.3114
Option d is right
Step-by-step explanation:
Let X be the time spent on a treadmill in the health club
Given that research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard deviation of 5.4 minutes
Also given that X is normal
the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill.

round off to two decimals tog et
the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill is 0.31
Hence option d is right
Ben h484b8 jrh7br u3b37b u3v7 I Yea yebd7 yeve7 ueve7
Imagine the area is 360 degrees, or

radians.
You would multiply it by (3/8) to get your answer.
Answer:
for 24 and 72 its 24 for 16 and 18 it is 2
Step-by-step explanation:
Answer:
a = 3xi - 4yj b = -6xj c = -2xi + 2yj d = 5xi + 7yj
a ; b ; c ; d vectors
i and j unit vectors
Step-by-step explanation:
See attached file