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A lock combination |
2022-07-19 |
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Kendal pose la question :
If I tried I could probably (I think) figure the answer but it would take a minute and I hoped maybe as math people there may be a simple formula… I just watched a new movie Black Phone, the kid is given 5 numbers for a combination lock in order but with no indication where the stops are. The numbers (in order) are 23317, my question is how many possibilities with a standard combination lock are there…ie. 2-33-17, 23-3-17, 23-31-7…. As you can imagine not a great movie…my curiosity may get the best of me depending on how your app works ;). Thanks for your time.
Penny Nom lui répond. |
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Strings of letters |
2022-04-25 |
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Javar pose la question :
How many different combinations can I make with A 12 selection list but only
using A&B
Example:
A,B,A,B,A,B,A,B,A,B,A,B
A,B,B,A,A,B,B,A,A,B,B,A
B,B,A,A,B,A,B,A,B,A,A,B
penny Nom lui répond. |
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The length of a line at 45 degrees |
2022-04-09 |
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Aiden pose la question :
Let's say one line is diagonal and one line is vertical.
If they eventually meet at a 45 Degree angle,
How long will the diagonal line be compared to the vertical line?
(For Example: If The Vertical Line is Exactly 1 Inch.
penny Nom lui répond. |
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sec(pi/12) |
2022-03-23 |
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Diana pose la question :
Please help me find the exact value of the following trigonometric expression:
sec(pi/12). Thanks!
Harley Weston lui répond. |
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A word problem |
2022-01-29 |
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Ric pose la question :
Box of oranges weighs 9 pounds. 2/3 of oranges eaten. Box and
remaining oranges weighs 4 pounds. What is weight of box when
empty?
Penny Nom lui répond. |
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The next rational number |
2022-01-14 |
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Sophia pose la question :
what comes after 3 1/2?
Penny Nom lui répond. |
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A graph with 100 vertices and one edge |
2022-01-11 |
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Maftuna pose la question :
A graph has 100 vertices and only one edge. How many connected components does it
have?
Penny Nom lui répond. |
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A Word Problem |
2021-12-17 |
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Bryson pose la question :
Yolanda, Brian, and Charlie have a total of in their wallets. Brian has less than
Yolanda.
Charlie has times what Brian has. How much do they have in their wallets?
Penny Nom lui répond. |
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The height of a right triangle |
2021-12-15 |
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Slash pose la question :
hi how can i find the height of a triangle from the hypotenuse and base. please
go into some details with some steps because it is hard to understand. thanks
Penny Nom lui répond. |
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Simplifying a complex expression |
2021-12-15 |
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Grace pose la question :
Write in the form. a+bi,
-6-7i+8i^2+4i3-5i^4
Penny Nom lui répond. |
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Roll of film |
2021-11-20 |
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Brian pose la question :
Trying to create a formula to calculate the build up on a roll of film is calculated. Except instead of of a roll, it's essentially a rectangle with two semicircles on each at the end.
Example: I start with a 6" diameter core on each side, and I start winding .005"
thick film on the core. The distance between the center of those cores, length of the inner rectangle is 7.125.
If I continue to do this for a total length of film of 3000 feet, what will the
roll length and width be.
So what I need is the formula to perform this type of calculation.
Can you help me? I want to be able to plug the formula in a spread sheet and to be able to input a core diameter, a film thickness and a total length and the length between the center of the two cores(which is the inner rectangle's length I'm assuming).
Thanks
Harley Weston lui répond. |
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The sides of a 5-pointed star inscribed in a circle |
2021-09-18 |
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Scott pose la question :
Is there a calculation for the length of each side of a five-pointed star?
I am not worried about area but if I have a circle with a 7.5 foot radius and
place a star inside it, how can I measure the lines creating the star?
Harley Weston lui répond. |
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The dimensions of a rectangle |
2021-09-09 |
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Ash pose la question :
I need to know how to figure out the dimensions of a rectangle. I know that the
area is 30ft and the perimeter is 26ft. I'm 15 and I have no idea what I'm
supposed to do.
Harley Weston lui répond. |
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30 % off |
2021-09-07 |
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Corrine pose la question :
When I am shopping for clothing that is for sale, the advertisement may say the item is 30% off. The original price was $70. How much would it now be? (how do I figure that out?) Thank you!
Penny Nom lui répond. |
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The units digit of a square |
2021-09-04 |
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Aarzu pose la question :
Sorry this may be a dumb question but how do you find possible unit digits of a
perfect square
Penny Nom lui répond. |
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