Evaluate. Express your answer in scientific notation.
7.9 x 105 + 5.4 x 105
7.9 x 10^5 + 5.4 x 10^5 = (7.9 + 5.4) x 10^5 = 13.3 x 10^5
However, we want to express the answer in scientific notation, so we need to adjust the decimal part to be between 1 and 10. To do this, we can divide both the number and the exponent by 10:
13.3 x 10^5 = 1.33 x 10^(5+1) = 1.33 x 10^6
Therefore, the answer in scientific notation is 1.33 x 10^6.
To evaluate the expression 7.9 x 10^5 + 5.4 x 10^5, we need to add the two numbers together first:
7.9 x 10^5 + 5.4 x 10^5
This can be simplified to:
(7.9 + 5.4) x 10^5
Now, adding the two numbers inside the parentheses:
13.3 x 10^5
Finally, we can express the answer in scientific notation by moving the decimal point after the first digit:
1.33 x 10^6
Therefore, the value of 7.9 x 10^5 + 5.4 x 10^5 is 1.33 x 10^6.
To evaluate the expression 7.9 x 10^5 + 5.4 x 10^5, we first need to add the coefficients (7.9 + 5.4) and then add the exponents (5 + 5) to get the final answer.
1. Add the coefficients: 7.9 + 5.4 = 13.3
2. Add the exponents: 5 + 5 = 10
Combining the results, we have 13.3 x 10^10.
To express this in scientific notation, we move the decimal point in 13.3 to the right by 10 places, resulting in the answer:
1.33 x 10^11