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Which of the following are true statements about the expression
-9+9 ?
Choose 2 answers:
A The expression describes the number that is 9 to the left of -9 on the number line.
B The expression describes the number that is 9 to the right of -9 on the number line.
C The expression equals -18 .
D The expression equals 0 .

Which of the following are true statements about the expression $\newline$ $-9+9$ ? $\newline$ Choose $2$ answers: $\newline$ A The expression describes the number that is $9$ to the left of $-9$ on the number line. $\newline$ B The expression describes the number that is $9$ to the right of $-9$ on the number line. $\newline$ C The expression equals $-18$ . $\newline$ D The expression equals $0$ .

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Find a value using two-variable equations: word problems

Full solution

Q. Which of the following are true statements about the expression

\newline

-9+9

?

\newline

Choose

2

answers:

\newline

A The expression describes the number that is

9

to the left of

-9

on the number line.

\newline

B The expression describes the number that is

9

to the right of

-9

on the number line.

\newline

C The expression equals

-18

.

\newline

D The expression equals

0

.

Evaluate Expression: Evaluate the expression -9+9＂).\(\newlineTo find out what the expression equals, we simply add \$-9\) and \(9\) together.\(\newline\)\(-9 + 9 = 0\)
Truth of Statement A: Determine the truth of statement A.\(\newline\)Statement A says that the expression describes the number that is \(9\) to the left of \(-9\) on the number line. Since adding \(9\) to \(-9\) brings us back to \(0\), which is to the right of \(-9\) on the number line, statement A is false.
Truth of Statement B: Determine the truth of statement B. Statement B says that the expression describes the number that is \(9\) to the right of \(-9\) on the number line. Since adding \(9\) to \(-9\) results in \(0\), which is indeed \(9\) units to the right of \(-9\) on the number line, statement B is true.
Truth of Statement C: Determine the truth of statement C. Statement C says that the expression equals \(-18\). Since we have already calculated the expression \(-9+9\) to equal \(0\), statement C is false.
Truth of Statement D: Determine the truth of statement D. Statement D says that the expression equals \(0\). As we have calculated in Step \(1\), \(-9+9\) does indeed equal \(0\), so statement D is true.

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