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#### vivalajuicy

##### New member

- Nov 11, 2012

- 5

math assignment help please

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- Nov 11, 2012

- 5

math assignment help please

- Feb 1, 2012

- 57

Firstly, what is $100101_2$ in decimal?math assignment help please

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- Nov 11, 2012

- 5

a whole numberFirstly, what is $100101_2$ in decimal?

- Feb 1, 2012

- 57

It is, but more accurately $2^0\times 1+2^1\times 0+2^2\times 1+2^3\times 0+2^4\times 0+2^5\times 1 = \dots$

Make that result equal to $31_x = x^0\times 1+x^1\times 3$ and solve for $x$

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- Nov 11, 2012

- 5

thank you!!It is, but more accurately $2^0\times 1+2^1\times 0+2^2\times 1+2^3\times 0+2^4\times 0+2^5\times 1 = \dots$

Make that result equal to $31_x = x^0\times 1+x^1\times 3$ and solve for $x$