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lev888
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lev888
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01-16-2018
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01:29 AM
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Yesterday,
09:37 AM
lev888
replied to a thread
Help with join angles in circle Better question
in
Geometry and Trig
So you calculated the angle but it turned out to be wrong? Based on what?
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2 replies | 54 view(s)
08-10-2018,
10:04 AM
lev888
replied to a thread
Probability of seeing 11:11
in
Probability / Statistics
Should you take into account what time the average person goes to bed? It affects the probability of seeing 11:11pm.
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6 replies | 165 view(s)
08-10-2018,
09:37 AM
lev888
replied to a thread
Geometry problem involving equalateral triangle
in
Geometry and Trig
The formula is correct. But why do you need to isolate the square root?
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8 replies | 174 view(s)
08-10-2018,
06:11 AM
lev888
replied to a thread
Geometry problem involving equalateral triangle
in
Geometry and Trig
Edit: please ignore, confused with isosceles. Just the height is not enough to define it. How wide is the base?
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8 replies | 174 view(s)
08-09-2018,
11:31 AM
lev888
replied to a thread
If an angle 45 degree, then how to calculate the another angle?
in
Geometry and Trig
What does the problem say about that angle?
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18 replies | 437 view(s)
08-09-2018,
07:59 AM
lev888
replied to a thread
Regularly increasing values between X and Y with N number of points between?
in
Geometry and Trig
Choose y=f(x), such that it increases per your requirements and passes through y = 1 and 125. E.g. y=x2. Find x for y values of 1 and 125 - minx and...
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1 replies | 71 view(s)
08-08-2018,
03:30 PM
lev888
replied to a thread
How do I say that this function assumes this value?
in
Calculus
Is there x where the value is less than 9? How about greater than 9? If they exist, can this function 'skip' y=9? See the intermediate value theorem.
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4 replies | 129 view(s)
08-02-2018,
06:02 PM
lev888
replied to a thread
Math "Work" Problem: It takes 6 contractors 168 hours to refresh 197 devices.
in
Arithmetic
1. What happens with required time when instead of N people only 1 person is doing the same job? 2. What happens with required time when instead of...
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3 replies | 213 view(s)
08-02-2018,
02:41 PM
lev888
replied to a thread
What does it mean by 'an' and 'n' in the equation?
in
Intermediate/Advanced Algebra
Looks like somebody forgot to finish editing the page before publishing. Explanation: https://www.mathsisfun.com/algebra/sigma-notation.html
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16 replies | 543 view(s)
07-27-2018,
09:53 AM
lev888
replied to a thread
Credit Card Interest on charge of $1818.30 for audio system
in
Intermediate/Advanced Algebra
The note is very clear. 1. Use the entire balance, not remaining balance. 2. What is 28 in your calculations? The applicable period is from the day...
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3 replies | 128 view(s)
07-26-2018,
12:01 PM
lev888
replied to a thread
Vectors: A is at point (2,3) and B is the point (-2,0).
in
Geometry and Trig
Can you post your drawing? To find where D is you need to use the facts that 1. Vector BD is parallel to vector . Can you draw vector ? Can you...
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2 replies | 123 view(s)
07-17-2018,
05:05 AM
lev888
replied to a thread
What does it mean (180⁰ - θ)?
in
Geometry and Trig
The angles are supplementary (thanks, Dr.Peterson).
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9 replies | 398 view(s)
07-16-2018,
06:18 AM
lev888
replied to a thread
Patern in a sequence of numbers
in
Math Odds & Ends
The first digit in each row follows the sequence 1,2,3,... The last is 0. The rest follow the explanation in the hint.
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5 replies | 217 view(s)
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About lev888
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About lev888
Location:
Boston
Interests:
Photography, puzzles, reading
Occupation:
Software Development
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Total Posts
143
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01:29 AM
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