Multiply. Write the result in scientific notation.
(1.8 x 10¹)(7 x 10^5)
A) 1.26 107
B) 8.8.106
C) 8.8 105
D)1.26 106
D) 1.26 10^6
To multiply numbers in scientific notation, you need to multiply the coefficients (the numbers on the left) and add the exponents (the numbers on the right).
So, (1.8 x 10¹)(7 x 10^5) can be computed as follows:
1.8 * 7 = 12.6 (multiplying the coefficients)
10¹ * 10^5 = 10^(1+5) = 10^6 (adding the exponents)
Therefore, the result in scientific notation is 12.6 x 10^6, which is the same as 1.26 x 10^7.
So, the correct answer is option A) 1.26 107.