Answer
50.4
Work Step by Step
The product of a negative real number and a negative real number is a positive real number.
We convert the decimal into a fraction for the ease of simplification:
$(-0.9)(-56)$
=$-\frac{9}{10}\times-\frac{56}{1}$
=$\frac{-9\times-56}{10}$
=$\frac{504}{10}$
=$50.4$
