What is the value of the following expression?

(−81)(−9)

A) −90

B) −9

D) 9

D) 90

The expression (−81)(−9)  will give the value of 729.

Step-by-step explanation:

The given expression is (−81)(−9) .

The both numbers in the expression are negative numbers and they are given inside the brackets.

This means that, the negative numbers must be multiplied to get a final value.

The rules in multiplication are :

From the rules, it can be determined that the result of any two negative numbers will be a positive number.

So, eliminate option A) and B) because they have negative sign.

The expression (−81)(−9) = -81 × -9

⇒ 729.

Therefore, the option C) and D) are not in match with 729. None of the options are not the value of the given expression (−81)(−9).

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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