Question

0.00000000837 is expressed in its standard form as $x.37\times {10}^y$, where $x$ and $y$ are integers. The value of $y\times {10}^x$ is

• A. $900000000$
• B. $-90000$
• C. $-900000000$

Answer 1

The correct option is C $-900000000$

In standard form, $0.00000000837$ is expressed as $8.37\times {10}^{-9}$
$\Rightarrow x=8,y=-9$
$\Rightarrow -9\times {10}^8=-900000000$