Posted by **jeana** on Wednesday, July 13, 2011 at 8:19pm.

Write each of the following in the indicated base.

(a) 1021three to base ten.

(b) 534 to base twelve

(c) MCMLXII to base ten

- Math -
**Reiny**, Wednesday, July 13, 2011 at 9:47pm
a) 1021_{3} = 1(3^3) + 0(3^2) +2(3) + 1

= 27+6+1

= 34

b) powers of 12 are 12, 144 , 1728 ,....

so 534 = 3(144) + 8(12) + 6

= 386_{12}

c) MCMLXII = 1000 + 900 + 50 + 12 = 1962

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