11/12/16

What's the volume of the resulting solid?
The region in the first quadrant bounded by the line 3x+2y=7 and the coordinate axes is rotated about the x-axis. What's the volume of the resulting solid?
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11/11/16

I need help with this. Find a power series representation for f(x)=x/(1+4x)^2. Find radius of convergence. Thanks.
I differentiated but I got stuck. 
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10/31/16

n is a sum of two squares if n = a2 + b2 for integers a&b. If x&y are both sums of 2 squares, prove that xy is a sum of 2 squares.
Layout of the step by step procedure of solving the problem is needed  please.
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10/30/16

The sum of the reciprocals of 2 consecutive integers is11/30 . Find the numbers
It is an application problem have to find two numbers The sum of the reciprocals of  2 consecutive integers is 11/30. Find the numbers
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10/30/16

I need big help on this one. Thanks. Determine whether the series is convergent or divergent. n=1 to 8 (9 + (-1)^n)/(n*rootn)
Help. How do I do this? I get stuck when breaking it apart. Thanks.
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10/28/16

I need help on this problem. Show that the series 2/(n^2-1) from n=2 to infinity is convergent, and find its sum.
I get stuck when using telescoping series. I appreciate whoever can help me. Thank you.
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10/28/16

How many ways can we choose 3 positive integers a<b<c so that a•b•c=30,030
For an eighth grade math class that is talking about factoring with integers. Thank you to anyone who helps me. 
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10/27/16

Show by using the data sets above that De Morgan’s law holds true.
Show by using the data sets above that De Morgan’s law holds true.   (c) De Morgan’s Dual law for sets A & B states that (A ∩ B)' = A' U B' Given A = {x | x ? N, 3 ≤ x ≤ 15 and x mod 3 = 0},... more
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10/27/16

Number questions
If a and b are positive integers and 24ab is a perfect square, then which of the following cannot be possible?  1. Both a and b are odd 2. ab is a perfect square  3. Both a and b are divisible... more
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10/27/16

I need help just understanding math in general
I dont get the general aspect of math and i want to be able to understand it so what can i do 
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10/27/16

graph y=|3(x+2)|-1 and then show the tranformations axis of symmetry vertex and range and domain
please help and solve the problem have no clue what there talking about with transformation  
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10/25/16

You divide a 4 digit whole number by a 2 digit divisor. There is no remainder. The sum of the digits in the quotient is 9. What numbers might you have divided.
Please help.
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10/25/16

How might using the fundamental Theorem of Calculus solve an important problem in your field?
How might using the fundamental Theorem of Calculus solve an important problem in your field?
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10/25/16

Consider the surjective function cos: R ? [-1, 1] and let ~ be the associated equivalence relation x ~ y ?? cos x = cos y. Find the Equivalence Class
Consider the surjective function cos: R → [−1, 1] and let ∼ be the associated equivalence relationx ∼ y ⇐⇒ cos x = cos y.   Describe the equivalence classes of ∼. (b) Do the analogous exercise... more
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10/25/16

Show that the set D = N × Z is countable.
We are told to find injection between the set D and the set of natural numbers N but I'm not really sure how to do that in this case
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10/25/16

Find the value of K for which the following equations are consistent x + (k + 1)y + 1 = 0 2kx + 5y - 3 = 0 3x + 7y + 1 = 0
  Find the value of K for which the following equations are consistent x + (k + 1)y + 1 = 02kx + 5y - 3 = 03x + 7y + 1 = 0
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10/24/16

I NEED HELP ASAP! THANKS!
Test the Hypothesis that the variance of two populations are the same at 90% confidence level. The two sample variance are 8 with 40 degree of freedom and 12 with 50 degree of freedom. a.) what is... more
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10/24/16

Construct a polynomial function with the stated properties. Reduce all fractions to lowest terms. Fourth-degree and a single zero of 3
Construct a polynomial function with the stated properties. Reduce all fractions to lowest terms.Fourth-degree and a single zero of 3
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10/24/16

Please explain this set
Write the following set in builder notation form.The set gold medalists in the 2003 Winter Olympic Games.?a. {x = x is a gold medalist in the 2006 Winter Olympic Games} b. {x is a gold medalist in... more
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10/24/16

Flip four coins
If you toss four coins, what is the probability that you will get exactly 1 or 3 heads? 
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10/24/16

What is the rank of a matrix with linearly dependent columns? And what's the null space?
Let's say that a and b are independent vectors, while x and y are non-zero scalars.    Suppose there is a matrix A = [a  xa  b  yb]. What would the rank be? Since there are 2 independent columns... more
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10/24/16

Which of the following functions has a range of all real numbers?
y=-3x^2+5 y=4x^2-1 y=-7x+2 y=6(2^X)
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10/23/16

How do I mathematically prove the following statement is false?
In terms of purchasing power, a fifty percent tax on the price of goods X and Y is equivalent to a fifty percent reduction in income
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10/23/16

-3x^4-3x^2+1
What are the roots of the function?
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10/23/16

The measure of the angles of a triangle are in a ratio of 2 : 3 : 4. Find the number of degrees in the smallest angle of the triangle.
Please answer this ASAP!! I actually have no idea how to do this, and this is homework. I am in 8th grade geometry.
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