Multiply 0.75 by 2.8×10^−5
.(1 point)
Responses
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
2 point 1 times 10 to the negative 6 power
2.1×10−4
To multiply 0.75 by 2.8×10^−5, you multiply the decimal numbers together and add the exponents of the powers of 10. Therefore, the correct answer is 2.1×10−5.
To multiply 0.75 by 2.8×10^−5, you can multiply the numbers and add the exponents of the powers of 10:
0.75 × 2.8×10^−5 = 2.1×10^−5
To multiply 0.75 by 2.8x10^-5, you simply multiply the decimal number (0.75) by the other number (2.8) and then multiply the result by the power of 10 (represented as 10^-5).
Here's the step-by-step calculation:
0.75 x 2.8 = 2.1
Now, to include the power of 10, you multiply the result (2.1) by 10 raised to the power of -5.
2.1 x 10^-5 = 2.1x10^-5
So, the answer is 2.1 x 10^-5.