vockeyvockvock

Thanks a lot cat!!!

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Thank you

but how to solve it???

Thank you!

Actually I got it, the answer is 8.

Number the points clockwise, beginning with the upper left as 1. Number the center point 7.

We can create six equilateral triangles with side length one: 176, 172, 273, 657, 574, and 473.

We can also create two equilateral triangles with side length sqrt(3) : 135 and 246.

Thus, there are  8 such equilateral triangles.

Nice answer, I just did factoring way...

1. We first, just multiply it out (5ab x 1) - (5ab x 2a)

2. 5ab - 10a²b

3. We have a common factor b, b(5a - 10a²)

4. We factor again b(a(5-10a)

5. We factor again b(a(5(1-2a))

We get 5ab(1-2a))

Please tell me if you have any questions.

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The answer was 73

So that would mean 356 in base 10 to base 8 is

356 / 8 = 44 + remainder 4

44 / 8 = 5 + remainder 4

4 / 8 = 0 + remainder 4

So 356 converted is 444?

@cphil

Thanks a lot!