Answer:
the result in standard form is 7.1 x 10^3.
Step-by-step explanation:
To subtract (8.4 x 10^3) from (1.3 x 10^3) and express the result in standard form, we need to perform the subtraction and adjust the result to the appropriate power of 10.
The given numbers are already in scientific notation, where 10^3 means the decimal point is moved three places to the right.
So, the subtraction can be done as follows:
(8.4 x 10^3) - (1.3 x 10^3) = 8.4 - 1.3 = 7.1
Next, we need to determine the appropriate power of 10 to express the result in standard form. Since both numbers have the same power of 10 (10^3), the result will also have the same power of 10.
Therefore, the result in standard form is 7.1 x 10^3.
