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Type: Posts; User: asterisk_man

1. ## Question: Algebra

by asterisk_man
Answers
7
Views
1,701

### 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
Answers
4
Views
3,006

### You're talking about permutations...

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
Answers
7
Views
1,701

### juhi2011, if you think my answer is wrong please...

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
Answers
7
Views
1,701

### 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
Answers
5
Views
1,368

### 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
Answers
3
Views
3,184

### 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
Answers
6
Views
1,427

### 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
Answers
6
Views
1,427

### 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
Answers
1
Views
653

### 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
Answers
4
Views
9,181

### Please review your class notes and/or textbook...

Please review your class notes and/or textbook for this answer. We do not do your homework for you.
11. ## Question: Expets only!

by asterisk_man
Answers
3
Views
423

### Since I'm an expert I'll answer your questions:...

Since I'm an expert I'll answer your questions:
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
Answers
5
Views
806

### 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
Answers
3
Views
1,662

### "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
Answers
9
Views
798

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

Do you have a question or are we supposed to guess?
Whatever your question, show your work and we'll help you out.
15. ## Question: Equation that relates x and why

by asterisk_man
Answers
1
Views
623

### 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
Answers
1
Views
1,159

### 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
Answers
1
Views
5,774

### 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
Answers
3
Views
966

### Try this thread:...

Try this thread:
https://www.askmehelpdesk.com/science-children/three-metals-attracted-magnet-5060.html
19. ## Question: What is the atomic radii, of an element

by asterisk_man
Answers
2
Views
674

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

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

by asterisk_man
Answers
1
Views
579

### 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
Answers
4
Views
938

### Oooh, sorry capuchin. My answer gave it away much...

Oooh, sorry capuchin. My answer gave it away much more than your more helpful advice!
22. ## Question: Rearranging to express an element

by asterisk_man
Answers
5
Views
754

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

is your equation
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
Answers
4
Views
938

### 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
Answers
5
Views
754

### can't you start with the fact that a^{\log_a...

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
Answers
4
Views
606

### 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
Answers
8
Views
4,101

### 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
Answers
8
Views
4,101

### Can you show your work so far?

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

by asterisk_man
Answers
4
Views
1,044

### 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
Answers
7
Views
724

### 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
Answers
3
Views
669

### 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
Answers
1
Views
937

### 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
Answers
1
Views
809

### 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
Answers
2
Views
715

### 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
Answers
7
Views
724

### 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
Answers
1
Views
1,026

### 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
Answers
3
Views
3,639

### 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
Answers
4
Views
885

### I already answered your question here:...

I already answered your question here: https://www.askmehelpdesk.com/math-sciences/average-speeed-man-156364.html but I agree with terryg752.
I'm not really sure what KISS is thinking, certainly...
38. ## Question: Properties of rational exponents

by asterisk_man
Answers
1
Views
863

### 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
Answers
2
Views
1,556

### 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
Answers
26
Views
3,194

### When do you have English class?

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

by asterisk_man
Answers
1
Views
824

### 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
Answers
4
Views
826

### 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.
43. ## Question: Adding Fractions.

by asterisk_man
Answers
2
Views
899

### 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
Answers
4
Views
1,940

### 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
Answers
4
Views
826

### 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
Answers
2
Views
3,863

### 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
Answers
2
Views
886

### Try your text book

Try your text book
48. ## Question: Integer

by asterisk_man
Answers
3
Views
782

### 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
Answers
1
Views
1,802

### 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
Answers
38
Views
4,252

### if you supply a method to determine the value of...

if you supply a method to determine the value of knowledge and human life I'll let you know. Until then that is a question that each person must answer for themselves.
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