write this in scientific notation

A)(1.6x10 to the fifth power)(12.7x10 to the forth power)

A) 1.6*10^5

1.27*10^5

To write the expression "(1.6x10^5)(12.7x10^4)" in scientific notation, we need to multiply the numerical parts and add the exponents. Let's calculate it step by step:

1.6 x 10^5 = 16 x 10^4 (since 1.6 multiplied by 10 gives us 16, and 10^5 divided by 10 gives us 10^4)
12.7 x 10^4 remains the same

Now we can multiply the numerical parts and add the exponents:

16 x 10^4 x 12.7 x 10^4 = (16 x 12.7) x (10^4 x 10^4) = 203.2 x 10^8

Finally, we can write the answer in scientific notation:

203.2 x 10^8 = 2.032 x 10^10

Therefore, the expression "(1.6x10^5)(12.7x10^4)" in scientific notation is "2.032x10^10".