Question

Express your answers in scientific notation.5.8 * 10^1-7.4*10^0

Answer 1

`5.8*10^1-7.4*10^0`

In scientific notation, the exponent of the number 10 tells us how many spots the digital point must move to the right, if it is positive, or to the left, if it is negative. So

`\begin{gathered} 5.8*10^1=58 \\ 7.4*10^0=7.4 \\ 5.8*10^1-7.4*10^0=58-7.4=50.6 \end{gathered}`

Then, the answer, ater expressingi t in scientific notation, is

`5.8*10^1-7.4*10^0=5.06*10^1`