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The mean or expected value of the distribution of a discrete random variable is

the average of all possible values of the random variable the sum of the product of each possible value of the random variable and its probability the sum of the probabilities of the possible value

Prove (tanx+1)sqcosx= secx +2sinx

(tanx+1)sqcosx= secx +2sinx please prove that the left side equal the right side. Ive been working for hours but couldnt find the right answer. Thank you for your help and 10 points for the correct an

Mean Value theorem? Full points will be awarded!

So, f(x) = -3x^2 + 4 on interval [-1, 2]. what value of f (x) does the MVT assure us exists? at what point does it exist? for the first question, i got - 3 and for the second question, i got 1/2. Is

Local Maxima and Minimum - No Work Required Only Logic

Explanation and answers are greatly appreciated along with any help. Thanks in advance! ------- Assume that the polynomial P(x) has exactly two local maxima and one local minimum, and that these are t

MATH HELP Needed ASAP!

A radioactive chemical decays 20% each day. If 48 pounds of this chemical remain today, how many pounds of this chemical were present two days ago? Can you show work please, so I understand? Thanks!-

Some Calculus I homework help

The sum of two positive numbers is 75. Exactly what are the numbers if the product of one number times the cube of the other is to be maximum? How would I go about doing this?-Hello, Well, the way t

Linear algebra easy question

My textbook does a poor job of explaining of what looks like a simple question. The question is: Simplify: 3(2i + 7j - k) - 2(i - 4j)-alright Shawn, 3(2i + 7j - k) - 2(i - 4j) -distributive property

In how many ways can 16 different books be divided into stacks of 4, 5, and 7 books

I think the question is not what stacks of 4, 5, 7 can be made, but rather, Having decided on stacks of 4, 5, and 7, in how many ways can the books be distributed among them ? Since the stacks all h

Math Help!!! 10 points!!!!

Heres the question... A varies directly with B and Inversly with C squared. A=75 B=12 and C=1.2 What is the constant Of variation? I have no clue what the equation is set up as. A=BK/C^2??????-we

Help me? Could you please check my answers and tell me if i am wrong or right

4. A polynomial has one root that equals 4 + 17i. Name one other root of this polynomial. What the... I have been looking at this prob forever, how in hell am i supposed to solve this... 5. If a p

Red chicken gave 4/5 of 3/4 of her 75 eggs to white chicken , how many eggs does red chicken have left

please show work and please answer by 2morrow-4/5 of3/4=(4/5) X (3/4) =12/20=3/5 3/5 of 75=(3/5) X 75=45. This is number of eggs given away. Number of eggs left=75 - 45=30

Geometry fill in the blank question

parallel lines cut by a transversal create the same side of interior angles that are _________?-supplementary! http://library.thinkquest.org/20991/media/geo_tran.gif take a look at this diagram

Radioactive decay question

The radioactive isotope carbon-14 is present in small quantities in all life forms, and it is constantly replenished until the organism dies, after which it decays to stable carbon-12 at a rate propor

Can anyone answer a math question for me

To rent a car for one day, you must pay a base fee of $19.50. There is an additional charge of 25 cents for each mile that you drive. You want to spend no more than $50 for the one-day rental. What is

How do you solve -3x=2

Can anyone help me? How do you solve -3x=2 and -3x=1/3. How to solve x?-Like the last guy said you start by dividing by the number in front of the x.When it comes to dividing a fraction though its eas
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