Express in decimal form: 2.97times 10^-9

To express \( 2.97 \times 10^{-9} \) in decimal form, you need to move the decimal point 9 places to the left because of the negative exponent.<br /><br />Starting with 2.97:<br /><br />1. Move the decimal point 9 places to the left:<br /> - The first move takes it from 2.97 to 0.297.<br /> - The second move takes it to 0.0297.<br /> - Continue moving the decimal point until you have moved it a total of 9 places.<br /><br />After moving the decimal point 9 places to the left, you will have:<br /><br />\[ 0.00000000297 \]<br /><br />So, \( 2.97 \times 10^{-9} \) expressed in decimal form is \( 0.00000000297 \).