02/19/14

Hello, please help me solve this

What is the area of the top of a jar if the diameter of the jar is 3.00 inches?

11/24/13

Finding a definte Integral

Need help on     ∫1/(1-Χ²)    from -√2/2       to   +√2/2

Newton's Law of Cooling

after the coffee is heated to 200 degrees , it is set in a room at 50 degrees.It cools at a rate that is proportional to the difference between its current temperature and that of the surrounding... more

Find the interest earned on an interest-bearing account

Every month, a particular interest-bearing account earns 0.2 percent interest on the average balance for that month. The function B(t) =7.5t^2 -300t +5000 represents one investor's balance in this... more

11/24/13

what is the maximum y value on the graph of y=f(x) f(x)= -x^2+6x+8

what is the maximum y value on the graph of y=f(x) f(x)= -x^2+6x+8

Statistics questions

The mean incubation time for a type of fertilized egg is 19 days.  Suppose the incubation times are approximately normally distrubuted with a standard deviation of 1 day. What is the probability a... more

2- A radioactive substance decays at a rate proportional to itself. There are 200 grams at the start and 150 grams at the end of 12 hours. A) Find the amount A

2- A radioactive substance decays at a rate proportional to itself. There are 200 grams at the start and 150 grams at the end of 12 hours.A) Find the amount A present at any time t. [Round k to... more

11/21/13

Round-off?

Round-off -349.87 to three significant figures.

11/21/13

Round-off?

Round-off 0.01302 to three significant figures.

11/21/13

(1.5, 7.5) is a solution of a direct variation what would be it's direct variation equation

I don't understand this and I am almost failing please help me figure out how to do this I am in algebra and this is very confusing

11/21/13

how to do proofs

in a triangle, segment AB is parallel to segment CD, and segment AC is parallel to segment BD. prove that triangle ABC is congruent to triangle DCB.  

monopolistic firm involving income effect and substitution effect

Given the demand function of a monopolist operating two plants is equal to Q=400-4p and cost functions for plant A is equal to C=20Q and plant B is equal to C=0.5Q² Assuming the monopolist can... more

30% of all Girl Scout cookies sold are Thin Mints. If we select 9 boxes of cookies at random, what is the probability at most 5 of them are Thin Mints?

Economic Statistics IDoes anyone have a formula for these type of problems?

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