If Maria incorrectly placed the decimal point when she wrote 0.65 inches for the width of her tablet computer, we need to determine the correct placement of the decimal point based on the known size of the tablet.
Assuming that the width of the tablet is greater than 1 inch, we can't have a width of 0.65 inches since that is less than one inch.
If Maria accidentally moved the decimal point one place to the left, then the width should be 6.5 inches. If she accidentally moved the decimal point two places to the left, then the width should be 65 inches.
Without more information about the size of the tablet, we cannot determine the correct decimal number for the width. However, we can be sure that the correct width is either 6.5 inches or 65 inches, depending on where Maria misplaced the decimal point.