Answer:
20
Step-by-step explanation:
In binomial distribution,
n=sample size =69
p=probability of success = 0.29
mean = np = 69*.29= 20.0100
variance = npq = np(1-p) =20.01(1-0.29)=14.20710
standard deviation=sqrt(variance)=3.76923
(round to appropriate number of decimal places)
Join the center of the hexagon with the 2 base angles.
An equilateral triangle, with side length x, is formed.
(remark: a regular hexagon is made up of 6 equilateral triangles with equal length)
The height

forms 2 congruent right triangles with :
hypotenuse= x, side_1=x/2, and side_2=

.
From the pythagorean theorem we have:




thus, x=4.
The area of the triangle is 1/2 * 4 *

=6.93 (mm squared)
The area of the hexagon is 6* the area of the triangle = 42 (mm squared)
Answer: a. 42 (mm squared)
The answer is -3 I believe
Answer:
-74
Step-by-step explanation:
First: 5-2=3
-9*3=-27
111÷3=37
Then do -27-37=-74