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Do you need to use all the numbers? You could simply label the tamarins from 01 to 80. Take the first 2 digits of each set of four...

2019 is a prime number. So for the conjecture to be true: 19^n is divisible by 2019 ......... and/or [19^(m-n) -1] is divisible by...

Thank you for the response! I just did a quick search, and it looks like it involves vectors/matrices and probably some other topics...

Thank you for the reply! I'm not sure how I would go about rotating the x-axis 40 degrees clockwise. Would it be something like this...

Then let her learn some more arithmetic. My concern is that if she really does learn it, then she will be bored in math class for a...

I tried everything I know about number theory ( a course which I never took before) but can not solve the problem below. Can someone...

two triangular faces, A = 6 three rectangular faces, A = 8 lateral surface area of the cylinder, A = 2\pi \cdot r \cdot h =...

It looks like you missed the bottom surface of the prism! Add that, and don't round too soon, and you'll have the answer. But what...

Hi all, This probably isn't a super tough question for any of you to answer, but I'm stumped on this and could use some help. I am an...

okay guys this is the question: A zoo has 80 cotton-top tamarins. Describe in detail how the random- number table given below could be...

I don't think we have enough information. You can change the 2 unknown segments keeping the angle 124.6.

Please show us what you have tried and exactly where you are stuck. Please follow the rules of posting in this forum, as enunciated at...

mhester88, when typing this out horizontally, I would recommend you place the fractional part of the coefficient of the x-term inside...

Excellent advice! The parentheses are not absolutely necessary but surely avoids lot of Khan-fusion!!

On what grounds did you mark AE as x+x+x? Those are not all equal. They don't even look that way in the original picture. Label more...