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:

$0.3(-42)=\frac{3}{10}(-42)=\frac{3}{10}\times-42$

Multiply the numbers in the numerator and simplify:

$\frac{3\times-42}{10}=\frac{-126}{10}$

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

$-\frac{126}{10}=-12.6$

Hence, the required answer is -12.6.