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1. For what value(s) of k will the function f(x)=kx^2 -4x + k have no zeros?

...when there are no zeros b^2 - 4ac < 0 b = -4 a = k c= k (-4)^2 - 4(k)(k) < 0 k^2 > -4 For what number...

1 Answers · Science & Mathematics · 26/02/2014

2. In the reaction 2KI + F2 x 2 KF + I2, which is oxidized?

A) The oxidation number of I goes from -2 to 0. That is, it increases. That is one definition of oxidation.

1 Answers · Science & Mathematics · 27/02/2014

3. Let W be a subspace of R^n?

...c_2*w_2 + ... + c_k*w_k) = v ⋅ (c_1*w_1) + v ⋅ (c_2*w_2) + ... + v ⋅ (c_k*w_k) = c_1 * (v ⋅ w_1) + c_2 * (v ⋅ w_2) + ... + c_k * (v ⋅ w_k) = c_1 * 0 + c_2 * 0...

3 Answers · Science & Mathematics · 07/02/2014

4. If 0.600 mol of A and 0.200 mol of B are mixed in a 2.00 L container and allowed to reach equilibrium, what ar?

...if K = 49? A + B <--> C + D k = ([C][D]) / ([A][B]) .... [C] = [D] = x ........ [...

2 Answers · Science & Mathematics · 04/02/2014

5. Math Question: Combinations ?

a. total ways - ways with no women = 17c6 - 8c6 = 12348 <------ b. sum C(9,k)*C(8,6- k), k = 4 to 6 = 4620 <------ c. answer to (a) - 9c6 = 12,264 <-------

1 Answers · Science & Mathematics · 01/02/2014

6. Show that this sum equals (1/2)*Pi^(3/2)?

...which we could then use the Gamma identity: Gamma(1/2 + k) =√π k! C(2k,k) / 4^k ... to come up with: √π ArcSin[√y] = ∑ (k = 0 to ∞) (1...

2 Answers · Science & Mathematics · 17/01/2014

That's everything in T and/or K that is also in C so 9 + 23 + 15

1 Answers · Education & Reference · 09/01/2014

8. John Abbott Accomplishments?

... Caldwell Abbott, P.C., Q.C., K.C.M.G., B.C.L., D.C.L. ...

3 Answers · Arts & Humanities · 26/12/2013

9. I want to make a website with HTML. I know how to code HTML, but how do I create a webpage with it?

Uh. Okay, well first of all, you probably mean Windows x86 and x64. There's no such thing as an 86-bit (or 84-bit, for that matter) operating system. x86 is actually just another name for 32-bit architecture (why that is is out of scope of this answer; you can look...

5 Answers · Computers & Internet · 13/12/2013

10. Willie Wonka gives everyone who visits his factory 15 pieces of candy to take home?

... and bars" along with inclusion-exclusion, # of ways = sum (-1)^k*C(24,k)*C(38-3k,23), k = 0 to 4 = 2252099280<------- # of ...

2 Answers · Science & Mathematics · 03/12/2013