Elementary Algebra

$1.16$
The product of a positive real number and a positive real number is a positive real number. We convert the decimals into fractions for ease of simplification: $(0.4)(2.9)$ =$\frac{4}{10}\times\frac{29}{10}$ =$\frac{4\times29}{10\times10}$ =$\frac{116}{100}$ =$1.16$