Question

0.3(-42)=-100 • (-6.145)=

Answer 1

The given expression is:

`0.3(-42)`

Rewrite the decimal outside the parentheses as a fraction:

`0.3(-42)=(3)/(10)(-42)=(3)/(10)*-42`

Multiply the numbers in the numerator and simplify:

`(3*-42)/(10)=(-126)/(10)`

Since a division by 10 moves the decimal point to the right, it follows that:

`-(126)/(10)=-12.6`

Hence, the required answer is -12.6.