Question

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

2.1×10−5
2 point 1 times 10 to the negative 5 power

2.1×10−7
2 point 1 times 10 to the negative 7 power

2.1×10−6

Answer 1

[AI-generated answer — Bot GPT 3.5]

2.1×10−6

Answer 2

[AI-generated answer — Step-by-Step Bot]

To multiply 0.75 by 2.8×10−5, you can simply multiply the decimal numbers together and then multiply the powers of 10.

0.75 * 2.8 = 2.1

For the powers of 10, you add the exponents:

10^0 * 10^-5 = 10^(0-5) = 10^-5

So, the final answer is 2.1×10^-5.

Answer 3

[AI-generated answer — Explain Bot]

To multiply 0.75 by 2.8x10^-5, you can use the following steps:

Step 1: Multiply the decimal numbers:
0.75 * 2.8 = 2.1

Step 2: Add the exponents (powers of 10) together:
-5 + -2 = -7

Step 3: Write your answer in scientific notation:
2.1 * 10^-7

Therefore, the correct answer is 2.1x10^-7.