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Jul
29
reviewed No Action Needed Diophantine equation of four variables
Jul
21
comment Using triple integrals to find volume
Isn't this a cube with sides just less than1?
Jul
13
reviewed No Action Needed Differentiation of a modulus function
Jul
13
reviewed No Action Needed How many different functions are there that are equal to their own inverse?
Jun
30
comment Probability of a group of people voting yes or no
I agree. Gender doesn't matter. What are odds that jurors 1-3 vote yes, and 4-8 vote no? 1/256
Jun
20
comment Efficient elevator strategy
Does the building belong to the same company? If anyone from 4/5/6/7 needs to visit 8/9/10/11/12 regularly, you will find a contingent of people look to harm the software guy who arranged this.
Jun
20
comment Efficient elevator strategy
Why does 2 get special treatment?
Jun
19
revised Fuzzy Logic - Defuzzification
editted picture in
Jun
19
suggested approved edit on Fuzzy Logic - Defuzzification
Jun
18
awarded  Explainer
Jun
18
comment Special triangles
Do you know about degrees vs radians?
Jun
18
comment Simon invests $\$6000$ and it's compounded semi-annually for ten years
The answer from the book - $13,146 dictated that a single deposit was made. The text suggesting multiple deposits was an error and would render the book's answer incorrect.
Jun
17
revised Simon invests $\$6000$ and it's compounded semi-annually for ten years
Given the answer from book, there are no further deposits. I removed OP's typo.
Jun
17
awarded  Civic Duty
Jun
17
suggested approved edit on Simon invests $\$6000$ and it's compounded semi-annually for ten years
Jun
17
comment Simon invests $\$6000$ and it's compounded semi-annually for ten years
No. He has a typo in his question. Since the answer is \$13,146, there are no additional deposits. Back of envelope math, rule of 72, money doubles after 9 years at 8%, plus a bit more. \$13K is it.
Jun
17
answered Simon invests $\$6000$ and it's compounded semi-annually for ten years
Jun
17
comment New to matrices need help
To a matrix newbie, the operations of each transformation would be helpful.
Jun
16
comment inequalities with fraction problem x
most welcome! @Bernard's answer is correct, but I find that High School students benefit from seeing these graphs for better understanding of exactly what's going on.
Jun
15
comment We are given a class consisting of 4 boys and 4 girls.
A mathematical answer would help, regardless. If OP encounters a larger data set, it might not be 'small enough' and the equations would make more sense.