Question

Express this number in scientific notation. 31 billion

Answer 1

Step-by-step explanation:

we know that

1 billion=1,000,000,0001billion=1,000,000,000

In scientific notation

1,000,000,000=1*10^{9}1,000,000,000=1∗10

9

To find the value of 31 billion31billion

Multiply the value of one billion for 3131

so

\begin{gathered} 31*1*10^{9} =31*10^{9}\\ =3.1*10^{10} \end{gathered}

31∗1∗10

9

=31∗10

9

=3.1∗10

10

therefore

the answer is

3.1*10^{10}3.1∗10

10

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Answer 2

Answer:

Express this number in scientific notation. 31 billion=3379