Answer:
To find the product of 5 x 10^3 and 9 x 10^7, we need to multiply the two numbers. The first step is to multiply the two numbers without the exponents, which gives us 5 x 9 = 45. Next, we need to add the exponents to find the exponent of the final product. 10^3 and 10^7 have exponents of 3 and 7, respectively, so the final exponent is 3 + 7 = 10. This means that the final product is 45 x 10^10, or 4.5 x 10^11 in standard form.
Explanation: