You need to find the length of the bottom side of the triangle.
Let that side be c.
tan 50 = c/10
c = 10 * tan 50
c = 11.9175359259 (use a calculator)
Answer B
According to this chart, you could plug in the two points in the formula of the line equation you want!
The vertical angle diagonally across the equation, (3x +9) is also (3x+9).
Since m is perpendicular to n, that means that (3x + 9) + (x + 21) = 90° This is so because perpendicular lines form right angles which have the measure of 90°
3x + 9 + x + 21 = 90
4x + 30 = 90
4x = 60
x = 15
Answer:
20 days
Step-by-step explanation:
Number of books sold each day for 40 days :
The first quartile (Q1) = 2
For the 25% of the days = 2 books were sold
Hence 0.25 * 40 = 10 days, 2 books or less were sold
The upper quartile (Q3) = 12 books
For up to 75% of the days = 0.75 * 40 = 30 days ; 12 books or less were sold
To obtain the number of books sold between 2 and 12 ; we subtract :
(30 days - 10 days) = 20 days
.231 .232 .233 hope this helps ;D