(3.9 x 10^-1) x (7.2 x 10^-1)
To multiply two numbers written in scientific notation, you multiply their coefficients and add their exponents. So, (3.9 x 10^-1) x (7.2 x 10^-1) can be calculated as:
(3.9 x 7.2) x (10^-1 x 10^-1)
= 28.08 x 10^-2
Therefore, (3.9 x 10^-1) x (7.2 x 10^-1) equals 28.08 x 10^-2.
To multiply numbers written in scientific notation, you can simply multiply the coefficients (the numbers before the power of 10) and add the exponents.
In this case, you have (3.9 x 10^-1) multiplied by (7.2 x 10^-1).
The coefficient of the first number is 3.9 and the coefficient of the second number is 7.2. To find the product of these coefficients, multiply them: 3.9 x 7.2 = 28.08 (rounded to two decimal places).
Now, you need to add the exponents. The exponent for both numbers is -1, so you can add them together: -1 + (-1) = -2.
Finally, multiply the coefficient with the combined exponent of 10: 28.08 x 10^-2.
So, (3.9 x 10^-1) multiplied by (7.2 x 10^-1) equals 2.808 x 10^-1.
To multiply these numbers, we can multiply the numerical coefficients and then multiply the powers of 10.
Step 1: Multiply the numerical coefficients:
3.9 x 7.2 = 28.08
Step 2: Multiply the powers of 10:
10^-1 x 10^-1 = 10^(-1+(-1)) = 10^-2
Putting it all together, the product of (3.9 x 10^-1) and (7.2 x 10^-1) is 28.08 x 10^-2.