Multiply 0.75 by 2.8×10−5 .(1 point) Responses 2.1×10−4 2 point 1 times 10 to the negative 4 power 2.1×10−7 2 point 1 times 10 to the negative 7 power 2.1×10−6 2 point 1 times 10 to the negative 6 power 2.1×10−5

Answer 1

To multiply \(0.75\) by \(2.8 \times 10^{-5}\), you can follow these steps:

1. Multiply the decimal parts: \[ 0.75 \times 2.8 = 2.1 \]

2. Keep the exponent part the same: \[ 10^{-5} \]

Putting it all together, you have: \[ 0.75 \times 2.8 \times 10^{-5} = 2.1 \times 10^{-5} \]

The answer is \(2.1 \times 10^{-5}\).

So, the correct response is: 2.1×10^{-5} (or 2.1 times 10 to the negative 5 power).