Construction of the angle pi/6=30 degrees produces a 30-60-90 triangle, which has angles theta=pi/6 and 2theta=pi/3.
Step-by-step explanation:
We have been given a table of quiz scores whose standard deviation is 5.6. We are asked to find the test scores that are within one standard deviation of the mean.
First of all, we will find the mean of the test scores using average formula.




The scores within one standard deviation would be mean plus one SD and mean minus one SD that is:


Therefore, the quiz scores 17.15 and 28.35 are within one standard deviation of the mean.
The vertex at (1,2) and from there use this to make the graph.
over 1, up 1. over 2 up 4, over 3 up 9. and if you know its right side, you know its left side too.
Answer:

Step-by-step explanation:
We need to use the formula to calculate the probability of (A or B) where
A=Probability a student likes pepperoni
B=Probability a student likes olive
A and B =Probability a student likes both toppings in a pizza
A or B =Probability a student likes pepperoni or olive (and maybe both), a non-exclusive or
The formula is

Since 6 students like pepperoni out of 9:

Since 4 students like olive out of 9:

Since 3 students like both toppings out of 9

Then we have


Answer:
21
Step-by-step explanation:
because they all sum up together