20)
What is the value of the expression 6 3/4(-11.5)
A) 77 5/8
B) 69 3/4
C) -77 5/8
D) -69 3/4

The value of the expression is -77 5/8

In order to determine the value of the expression, we are to multiply

In order to do this, we are to convert the mixed fraction and the decimal to improper fractions

To convert -11.5 to an improper fraction, -11.5 has to be converted to a mixed fraction first

Remember that 0.5 =

The decimal now becomes

When converted to an improper fraction,   and

x =

converting to mixed fraction, the number becomes -77 5/8

To learn more about fractions, please check: link

-77.625

Step-by-step explanation:

I'm assuming you meant (6 3/4)(-11.5).  If that's the case, then:

Convert 6 3/4 into a mixed number with decimal fraction:  6.75.

Then multiply this 6.75 by (-11.5).  Using a calculator, we get:

-77.625