Question

Multiply 0.75 by 2.8 × 10^−5

Answer 1

To multiply 0.75 by 2.8 × 10^−5, we need to multiply the decimal number (0.75) by the number in scientific notation (2.8 × 10^−5).

First, multiply 0.75 by 2.8:

0.75 * 2.8 = 2.1

Next, multiply the result by 10^−5. When multiplying by a number in scientific notation, we need to move the decimal point to the left according to the exponent. In this case, we move it 5 places to the left:

2.1 * (10^−5) = 0.000021

So, multiplying 0.75 by 2.8 × 10^−5 equals 0.000021.