valuate. Express your answer in scientific notation.

Question

1, point, 9, times, 10, cubed, plus, 8, point, 7, times, 10, cubed
1.9×10
3
+8.7×10
3

Answer 1

To evaluate and express the answer in scientific notation, we add the numbers first and then adjust the decimal point and exponent if necessary.

1.9 × 10^3 + 8.7 × 10^3

Adding the numbers:
1.9 + 8.7 = 10.6

Now, adjust the decimal point:
10.6 becomes 1.06 by moving the decimal point one place to the left.

Finally, adjust the exponent:
10^3 becomes 10^4 by increasing the exponent by one.

So, the answer in scientific notation is 1.06 × 10^4.