7688(9) = 7∙9^3+6∙9^2+8∙9^1+8∙9^0 = 5103+486+72+8 = 5669(10)
432,1(5) = = 4∙5^2+3∙5^1+2∙5^0+1∙5^-1 = 100+15+2+0.2 = 117.2(10)
120(3) = 1∙3^2+2∙3^1+0∙3^0 = 9+6+0 = 15(10)
102.31(4) = 1∙4^2+0∙4^1+2∙4^0+3∙4^-1+1∙4^-2 = 16+0+2+0.75+0.0625 = 18.8125(10)
101.1(2) = 1∙2^2+0∙2^1+1∙2^0+1∙2^-1 = 4+0+1+0.5 = 5.5(10)
Объяснение:
7688(9) = 7∙9^3+6∙9^2+8∙9^1+8∙9^0 = 5103+486+72+8 = 5669(10)
432,1(5) = = 4∙5^2+3∙5^1+2∙5^0+1∙5^-1 = 100+15+2+0.2 = 117.2(10)
120(3) = 1∙3^2+2∙3^1+0∙3^0 = 9+6+0 = 15(10)
102.31(4) = 1∙4^2+0∙4^1+2∙4^0+3∙4^-1+1∙4^-2 = 16+0+2+0.75+0.0625 = 18.8125(10)
101.1(2) = 1∙2^2+0∙2^1+1∙2^0+1∙2^-1 = 4+0+1+0.5 = 5.5(10)
Объяснение: