Calculate \( \left(2.6 \times 10^{8}\right)+\left(3.1 \times 10^{8}\right) \) Give your answer in standard form.

To add \( \left(2.6 \times 10^{8}\right) + \left(3.1 \times 10^{8}\right) \), you first combine the coefficients because they have the same power of ten. So, \( 2.6 + 3.1 = 5.7 \). Now, you write it back in standard form: \[ \left(5.7 \times 10^{8}\right) \] Therefore, the answer is \( 5.7 \times 10^{8} \).