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Type: Posts; User: asterisk_man

1. ## Question: Algebra

by asterisk_man
7
Views
1,743

### I couldn't disagree more. My example did not use...

I couldn't disagree more.
My example did not use fractional exponents.
Do you disagree that 2^3*2^4=128?
Do you disagree with the identity x^a*x^b=x^(a+b)?
I gave an example of how to multiply...
2. ## Question: How many possibilities

by asterisk_man
4
Views
3,087

You're talking about permutations. N items can be arranged in n! Ways (where ! Is the symbol for factorial).
For example, 5 items can be arranged in 120 ways and 20 items can be arranged in...
3. ## Question: Algebra

by asterisk_man
7
Views
1,743

juhi2011, if you think my answer is wrong please provide the right answer to prove that you are correct so that I may have a chance to disagree with you.
4. ## Question: Algebra

by asterisk_man
7
Views
1,743

### This should be a new question. However, just like...

This should be a new question. However, just like with normal numbers you need to get to a common denominator. For example, \frac 1 {2x} + \frac 1 x = \frac 1 {2x} + \frac 2 {2x} = \frac {1 + 2} {2x}...
5. ## Question: Solve math equation

by asterisk_man
5
Views
1,411

### jiten55 seems right to me. Substitute x=1 in and...

jiten55 seems right to me. Substitute x=1 in and you'll see it's right.

5^{1+3}-5^{1+1}=5^4-5^2=625-25=600
6. ## Question: Sorting strings alphabetically

by asterisk_man
3
Views
3,255

### We won't do your assignments for you. If you have...

We won't do your assignments for you. If you have any questions on how to implement a sort function we can answer that
7. ## Question: Fun with Magnets

by asterisk_man
6
Views
1,486

### I think a faraday cage will block magnetic fields...

I think a faraday cage will block magnetic fields as well as electric fields so surrounding the spoon with a metallic sphere should also work.
8. ## Question: Fun with Magnets

by asterisk_man
6
Views
1,486

### yeah, try another object which is also attracted...

yeah, try another object which is also attracted to the magnet. I believe that if you put an iron sheet between the magnet and the spoon the iron sheet will conduct the magnetic lines of force...
9. ## Question: Hope apparatus

by asterisk_man
1
Views
685

### Sorry kesavan, I guess none of us are really...

Sorry kesavan, I guess none of us are really familiar with the hope apparatus. I've found few references to it online and none of them seemed to really help me answer your question. Do you know of...
10. ## Question: C program execution sequence

by asterisk_man
4
Views
9,344

11. ## Question: Expets only!

by asterisk_man
3
Views
446

Capuchin,last Thursday, in his bedroom, wouldn't you like to know. ;)

Seriously, this is like asking who discovered fire, or the wheel. The article...
12. ## Question: Algebra Quadratic wordproblem

by asterisk_man
5
Views
832

### jiten55 is essentially correct. One extra thing...

jiten55 is essentially correct. One extra thing to be aware of is that since this will result in a quadratic equation you'll end up with two mathematic solutions for x. However, only one of them will...
13. ## Question: Twenty minus the product of 4 and a number x is less than four

by asterisk_man
3
Views
1,730

### "twenty minus the product of 4 and a number x is...

"twenty minus the product of 4 and a number x is less than four" and you came up with "(x-y)x^2-12xy+20y^2)"??
you can't be serious, that equation must be for a different problem.

lets work it...
14. ## Question: Algebra

by asterisk_man
9
Views
832

### Do you have a question or are we supposed to...

Do you have a question or are we supposed to guess?
15. ## Question: Equation that relates x and why

by asterisk_man
1
Views
677

### what's the question? There are an infinite number...

what's the question? There are an infinite number of equations in terms of x that would return 35 when x=7. There are even an infinite number of linear equations with that property.
16. ## Question: Vectors and matrices

by asterisk_man
1
Views
1,205

### I think your initial equations will transform...

I think your initial equations will transform into this (if this helps you) but I haven't done matrices in a while:
\left[ \begin{array}
2 \\
3
\end{array} \right] x +
\left[ \begin{array}
5...
17. ## Question: Geometry and trigonometry- bearings

by asterisk_man
1
Views
5,851

### Draw a picture, look at the angles, try drawing a...

Draw a picture, look at the angles, try drawing a line which goes through point B and perpendicular to line AC.
18. ## Question: Magnetism

by asterisk_man
3
Views
1,039

19. ## Question: What is the atomic radii, of an element

by asterisk_man
2
Views
708

### Atomic radius - Wikipedia, the free encyclopedia...

Atomic radius - Wikipedia, the free encyclopedia
20. ## Question: Struggling with a simple equation

by asterisk_man
1
Views
597

### The problem you have listed is ...

The problem you have listed is
-3.6P_0+83.3=\left(3 \frac 4 7\right)P_0+46.4
and you want to solve for P0.
First I'll convert 3 4/7 to 3.57

-3.6P_0+83.3=\left(3.57\right)P_0+46.4 \\
\text...
21. ## Question: Geometry - polygons

by asterisk_man
4
Views
968

22. ## Question: Rearranging to express an element

by asterisk_man
5
Views
772

### is your equation 59dB=20\log {\frac 1...

59dB=20\log {\frac 1 {{\left(1+{\left(\frac F {Fc}\right)}^6\right)}^{\frac 1 2}}}

And what base is your log? I'm assuming base 10. So log(10)=1.
23. ## Question: Geometry - polygons

by asterisk_man
4
Views
968

### assuming it's a convex polygon the equation for...

assuming it's a convex polygon the equation for the sum of the interior angles in degrees is (n-2)*180 where n is the number of sides.
24. ## Question: Rearranging to express an element

by asterisk_man
5
Views
772

can't you start with the fact that a^{\log_a b}=b? After that it's all algebra I think.
25. ## Question: Number Theory

by asterisk_man
4
Views
622

### Not sure what you mean. When n=2 n^4+1=17 which...

Not sure what you mean. When n=2 n^4+1=17 which IS prime.
Initial investigations (n=1.. 6) indicate that it IS prime if n is an even positive integer.
26. ## Question: Solving Composite Functions

by asterisk_man
8
Views
4,178

### Thanks for showing your work! :) Since you...

Thanks for showing your work! :)

Since you want to solve for when x=-4 you don't need to do it the hard way and pull the x all the way through. Just substitute the -4 straight away and it will be...
27. ## Question: Solving Composite Functions

by asterisk_man
8
Views
4,178

### Can you show your work so far?

Can you show your work so far?
28. ## Question: Length of diagonal of square

by asterisk_man
4
Views
1,079

### you've got the right idea. You just used the...

you've got the right idea. You just used the wrong data. You said that the side was 7\sqrt 2, not 7. Replace your 7s with the real side length and you'll be good to go.
29. ## Question: Turning fork

by asterisk_man
7
Views
760

### kesavan, you're certainly right that the energy...

kesavan, you're certainly right that the energy will be distributed across 2 prongs. I think I had some additional complication in mind when I wrote that but I can't remember it now.

Another idea...
30. ## Question: Solving Functions of g and x

by asterisk_man
3
Views
701

### f(x) means evaluate the function f at the point x...

f(x) means evaluate the function f at the point x
g(f(x)) means evaluate the function g at the point which is the result of evaluating the function f at the point x.
essentially you determine f(x)...
31. ## Question: I can't figure out how to set it up.

by asterisk_man
1
Views
960

### What's the probability that 1 gives a poor rating?

What's the probability that 1 gives a poor rating?
32. ## Question: Can't figure out how to start Probability Issue

by asterisk_man
1
Views
829

### you have enough information. The probability of...

you have enough information.
The probability of n independent events each with probability P is P^n
33. ## Question: Having trouble with algebra

by asterisk_man
2
Views
732

### your equation is ambiguous. Is it: \sqrt x + 4...

your equation is ambiguous. Is it:

\sqrt x + 4 = 3
34. ## Question: Turning fork

by asterisk_man
7
Views
760

### Good question. Clearly a single metal bar will...

Good question. Clearly a single metal bar will produce a tone when struck and the frequency of a tuning fork is a function of the single tine length. I have two theories about why two tines are used:...
35. ## Question: Bar magnets

by asterisk_man
1
Views
1,065

### Nothing will happen unless there are external...

Nothing will happen unless there are external forces applied to the bar. ;)
36. ## Question: Percent to a fraction

by asterisk_man
3
Views
3,690

### Ok. shygrneyzs' answer is essentially correct but...

Ok. shygrneyzs' answer is essentially correct but the explanation is poor. Let's get our terminology correct. If we answer questions using the wrong terms we'll only make the original poster more...
37. ## Question: Average Speed Anyone?

by asterisk_man
4
Views
923

I'm not really sure what KISS is thinking, certainly...
38. ## Question: Properties of rational exponents

by asterisk_man
1
Views
890

### note the following four facts: 125 =...

note the following four facts:
125 = 5^(something)
(a^b)^c=a^(b*c)
a^b * a^c = a^(b+c)
a^b / a^c = a^(b-c)
39. ## Question: Resultant vector of 3 forces

by asterisk_man
2
Views
1,597

### The way to go is to convert all vectors into...

The way to go is to convert all vectors into their x and y components and then just add all the x and add all the y and then convert that pair into a magnitude/direction.

For example, for the 15 N...
40. ## Question: Kelly stories new.

by asterisk_man
26
Views
3,321

### When do you have English class?

When do you have English class?
41. ## Question: Average speeed man

by asterisk_man
1
Views
859

### Average speed is simple to calculate. Take the...

Average speed is simple to calculate. Take the total distance traveled and divide it by the total amount of time elapsed.

So, in your case you have 31 pieces of data which are each 1/60th of a...
42. ## Question: Can anyone explain the C program

by asterisk_man
4
Views
891

### I won't explain each line. I will answer specific...

I won't explain each line. I will answer specific questions you might ask though.

by asterisk_man
2
Views
941

### Give everything a common denominator,...

Give everything a common denominator, add/subtract the numerators and then reduce the result
44. ## Question: Pendulum's period during oscillation

by asterisk_man
4
Views
1,995

### Yeah, clearly a normal pendulum's period is not a...

Yeah, clearly a normal pendulum's period is not a function of time.
45. ## Question: Can anyone explain the C program

by asterisk_man
4
Views
891

### What sort of question is this? Either it's...

What sort of question is this? Either it's homework, in which case we don't do your homework for you but we can help with specific difficulties you're having, or... well I can't really think of...
46. ## Question: Typing symbols

by asterisk_man
2
Views
3,954

### To use the alt codes above you need to do it in...

To use the alt codes above you need to do it in the following order:
Press alt
Press and release each number in order on the NUMERIC KEYPAD. The normal numbers above the letters will not work. ...
47. ## Question: Linear sorting algorithms

by asterisk_man
2
Views
931

48. ## Question: Integer

by asterisk_man
3
Views
850

### pow is defined as: double pow(double x, double...

pow is defined as:
double pow(double x, double y);
so the two integers you supply, 10 and I, are cast into doubles, the function is evaluated and a double is returned. When that double is then cast...
49. ## Question: If the correct answer is May cgs, \$15,500 how is the answer correct need to see work

by asterisk_man
1
Views
1,876

### I don't even think that you've asked a question....

I don't even think that you've asked a question.
Also, we will only help with homework, not do it for you.
50. ## Question: Knowledge over life? Which is more important?

by asterisk_man