Sunday
December 8, 2013

# Posts by Cam

Total # Posts: 110

statistics
A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2. Assume that the variable is normally distributed. 1. Identify the population mean. 2. Identify the population standard deviation. 3. Suppose a rando...

Teaching techniques
Which learning technique is frequently used in the expository model of teaching?

Calculus
Find the second derivative of the function f(x)= t^2e^(-2t)

Calculus
Write the expression as the logarithm of a single quantity. ln 2 + 1/2 ln(x +1)-2 ln(1+ x^(1/2))

Calculus
Determine the function is concave upward and where it is concave downward f(x)= x / (x+1)

Calculus
Find the absolute maximum value and the absolute minimum value, f(x)= (x +1 )/ (x-1) on [2, 4]

Calculus
Find the absolute maximum value and the absolute minimum value, g(x)=1/8 x^2 - 4 x^(1/2) on [0, 9]

College Math
I need help solving these problems by using the substitution problem 2x-3y=16 5x+2y=21

Chemistry
Calculate the pH of the 0.20 M NH3/0.25 M NH4Cl buffer. I calculated the pH to be 9.15 What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 72.5 mL of the buffer?

Calculus
Find relative maxima and minima of g(x)= 2x^2+ 4000/x +10

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