Answer:
-15.58
Explanation:
There is a way to multiply decimals without difficulties, using multiplication with integer numbers. The product of (-8.2)(1.9) is the same as -82*19 with two decimals (because each factor has one decimal, then the result will have the sum, that is two decimals). Then,
-82*19 = -1558, so the product of (-8.2)(1.9) is -15.58. You can check it with a calculator.