multiply. write your answer in scientific notation. 80·(5×10¹)

Explanation:

Step1: Rewrite 80 in scientific notation

$80 = 8\times10^{1}$

Step2: Multiply the numbers

$(8\times 10^{1})\times(5\times 10^{1})=(8\times5)\times(10^{1}\times10^{1})$

Step3: Calculate the product of coefficients and exponents

$8\times5 = 40$, and $10^{1}\times10^{1}=10^{1 + 1}=10^{2}$ So, $40\times10^{2}$

Step4: Adjust to proper scientific - notation

$40\times10^{2}=4\times10^{1}\times10^{2}=4\times10^{3}$

Answer:

$4\times 10^{3}$