Multiply 0.75 by 2.8×10−5

Answer 1

To multiply 0.75 by 2.8×10^-5, we can simply multiply the decimal fractions:

0.75 * 2.8×10^-5 = 0.021×10^-5.

However, we can simplify this expression by moving the decimal point one place to the right and changing the exponent accordingly. Since moving the decimal point one place to the right is equivalent to multiplying by 10, our expression becomes:

0.021×10^-5 = 2.1×10^-4.

Therefore, 0.75 multiplied by 2.8×10^-5 is equal to 2.1×10^-4.