Answer:
Step-by-step explanation:
The unit circle has the parametric equation:


where
in our case is the terminal side of the angle in standard position.
We substitute to get:


is the required point.
Answer:
Step-by-step explanation:
At the end of any given business day, CFFC has 400-80t cases of perfume on hand, where t = 1 represents Monday, t = 2 represents Tuesday and so on. The inventory becomes nil on Friday evening. So,
The values of a and b are
a = 0
b = 5
Using the formular for average value, we have the average value as

Average inventory is 200 cases
Answer:
95% Confidence interval for taxi fare: ($20.5,$24.2)
Step-by-step explanation:
We are given the following data set: for fares:
$22.10, $23.25, $21.35, $24.50, $21.90, $20.75, and $22.65
Formula:
95% Confidence interval:
Putting the values, we get,

Im not sure about the second one, but for the first one, Alex’s height is 167.64 cm. :)