The answer is the second one, <em>2.</em>
Try going with A. x-axis: years in increments of 1; y-axis: years in increments of $50,000
Coefficient of variation is the ratio of the standard deviation to the mean (average)
Coefficient of variation = (standard deviation/mean) × 100

×

=
Answer:
Step-by-step explanation:
We can easily determine the exact value of this unknown angle by breaking it into known angles that can add together to give up 105. For example, 105 degrees is 60 + 45, both of which are found on the unit circle. We ill also use the trig identity for the sum of the cos of 2 angles which is:
These values are found on the units circle, so make sure you have one handy. Those values fill in as follows:
which simplifies to
