09/05/13

hydrogen bonds

can a hydrogen bond occur between two atoms of hydrogen

09/04/13

Solve the problem

This question confuses me: the length of a rectangle is 8 inches more than the width. If 4 inches is taken from the length and added to the width, the figure becomes a square with an area of... more

09/04/13

How high does it go?

A ball is thrown up at velocity of 50.0 m/s. Consider no air resistance. a) How much time does it take to reach its maximum height? b) How high does it go? c) How fast is it going when it... more

How do I show Tchebysheffs's theorem,

Let a k ≥ 1. show that for any set of n measurements, the fraction included in the interval y¯ − ks to y¯ + ks is at least (1 - 1/k²).   hint:  s² = 1/(n-1)[ ∑(y - y¯)²] In this expression ,... more

09/03/13

how do i factor 2x^3 -9x^2 +2x+3?

help please. i tried using the p/q method, but when i graphed it the roots were all fractions.

09/02/13

What math subject is after complex analysis?

  What math subject comes after Complex Analysis for physics and electrical engineering majors?

09/02/13

Find the general solution?

Find the general solution of x'=(3, 2, -2, -2)x. (This is a matrix, 3 and 2 on the left, -2 and -2 on the right.)   Answer: x=c1(1, 2)e^-t+c2(2, 1)e^2t   After c1 and c2 are the matrixes, 1 on... more

09/02/13

1i+4w+1c=?

8 imperial mints and 4 curly wurly cost 964p. 4 curly wurly and 8 carmac cost 756p. How much does 1 imperial mint,1 curly wurly and 1 carmac cost?

08/31/13

How to solve for Y(s)?

Y(s)(s^2+s+5/4)=1/s-e^(-pi*s)/s+s

08/31/13

What's the acceleration?

What's the acceleration of a car that starts at rest and has a velocity of 25 m/s in 10 seconds?

how many significant digits are there in the number 180.200?

 In the number 180.200, how many significant digits are there?

08/28/13

I bought a car for 92,000.00. What would be the total price of it with 2.49 financing per year and the payments?

A 92,000.00 Jaguar at 2.49 percent interest, on a 5 year plan. What would be total cost and payments monthly?

08/27/13

What is the square root of 163.28? (Show work)

If you can, please explain the basics of square roots.

08/27/13

Jaguar bought at 92,000.00 at 1.49 percent interest is how much total if payments are made for 5 years, and how much is saved from 2,49 percent payments

Jaguar bought at 92,000.00 at 1.49 percent interst for 60 months equals what price total, and difference in total for same amount 92,000.00 at 60 months for 2.49 interest. What is the difference in... more

08/26/13

|y-x|-|x-y|

Write the given expression without the absolute-value symbols.

Word Problem

Mrs. Lewis needs to buy two types of grain, oats, and barley to mix as a feed supplement for her cattle. She has $4275 to spend on grain and wants the mixture to be 3 parts oats and 2 parts barley.... more

08/25/13

What are the dimensions of the pool?

A particular rectangular swimming pool is twice as long as it is wide. There is a concrete walkway around the perimeter of the pool. The walkway is a constant feet wide. The walkway has an area of... more

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