Answer:
I am guessing about 150 - 200 students did not buy a yearbook.
Step-by-step explanation:
First let's assume that there are 1,000 or so students in the school. 856 would be a little over 4/5 of 1,000 just as 8 would be 4/5 of 10.
Answer:


Step-by-step explanation:
Use the trigonometry formula

You are given that

Substitute into the first formula

Angle
is acute angle, then the sine of this angle is positive and

Answer:
6
Step-by-step explanation:
because i just know it lol
It si cool so basicly u take 5 divide bye 13 times 5
Answer:
The sum of interior angles of given polygon is 900°
Step-by-step explanation:
A regular polygon is a n-sided figure with n sides and the length of all sides is same.
In the diagram, we have a polygon with 7 sides.
The formula given is used to calculate the sum of interior angles of a polygon

Here n is the number of sides of polygon
In the given polygon
n = 7
So,

Hence,
The sum of interior angles of given polygon is 900°