1.89 × 102
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49% of 189= 49% * 189= 0.49 * 189= 92.61
The number 189 in binary is the eight-digit number 10111101. The digits in a binary number are exponents of 2 rather than 10, so that for an eight-digit number in binary, the digit places represent 128, 64, 32, 16, 8, 4, 2, 1 instead of increasing values of 10. 10111101 = 128 + (0x64) + 32 +16 + 8 + 4 + (0x2) + 1 = 189
you do not do anything when you add numbers with exponents. you just figure out the answer. it is only if you multiply numbers with exponents, where you add the exponents..
Fractional exponents follow the same rules as integral exponents. Integral exponents are numbers raised to an integer power.
Add the exponents