The probability density function (pdf) is;
f(x)=
for a ≤ x ≤ b.
while the mean is given as 
And the standard deviation given as 
Answer: $277.91
<u>Step-by-step explanation:</u>
The average of the 2 highest salaried quarters is:

Divide that by 26 (weeks) to find out her average weekly salary:

Multiply that by 55% (0.55) to calculate her weekly unemployment benefit:

Round to the nearest penny --> $277.91
Answer:
C
Step-by-step explanation:
Answer: 4
Step-by-step explanation:
Because %s can be expressed as fractions over 100, because 90 is 70% of x, 70% is 70% of 100. Thus, 90/x = 70/100.
<em>Hope it helps <3</em>
The statement given is :
If a figure has three sides , it is a triangle
contrapositive statement is :
If a figure is not a triangle, then it does not have three sides.
last option is correct