Which of the following expression(s) are equivalent to 9 ? Select all that apply.
A.
B.
C.
D.

Ask by Campos Hilton. in the United States

Jan 17,2025

Question

Which of the following expression(s) are equivalent to 9 ? Select all that apply. A. $$ 3^{2} $$ B. $$ 4-(-5) $$ C. $$ \sqrt{-81} $$ D. $$ \sqrt{81} $$

UpStudy AI · Accepted Answer

To determine which of the given expressions are equivalent to 9, we need to evaluate each expression and compare the result to 9.

A. $$3^{2}$$
$$3^{2} = 3 	imes 3 = 9$$

B. $$4-(-5)$$
$$4-(-5) = 4 + 5 = 9$$

C. $$\sqrt{-81}$$
$$\sqrt{-81}$$ is not a real number because the square root of a negative number is not defined in the real number system.

D. $$\sqrt{81}$$
$$\sqrt{81} = 9$$

Therefore, the expressions that are equivalent to 9 are:
A. $$3^{2}$$
B. $$4-(-5)$$
D. $$\sqrt{81}$$
The expressions equivalent to 9 are A. $$3^{2}$$, B. $$4-(-5)$$, and D. $$\sqrt{81}$$.

Which of the following expression(s) are equivalent to 9 ? Select all that apply.
A.
B.
C.
D.

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