Question

Find the product and express your answer in scientific notation. (1.3 x 10-6)(4 x 1010)

Answer 1

`(1.3\cdot10^(-6))(4\cdot10^(10))=(1.3\cdot4)(10^(-6)\cdot10^(10))=5.2\cdot10^(-6+10)\\\\=\boxed{5.2\cdot10^4}`