Chapter SR26, Problem 21P

Solution

State whether the compound statement is true or false.

True.

Given:

The given compound statement.

  $-8(9)=-72and8(-9)=-72$ .

Concept Used:

• A compound statement has two or more parts joined by or or and.
• For an and compound statement to be true, each part must be true.
• For an or compound statement to be true, at least one part must be true.

Calculation:

The given compound statement is -

  $-8(9)=-72and8(-9)=-72$ .

  $\begin{array}{l}-8(9)=-72\\ -72=-72true\end{array}$

  $\begin{array}{l}8(-9)=-72\\ -72=-72true\end{array}$

True, because each part is true.