Connect with experts and get insightful answers on IDNLearn.com. Ask your questions and receive detailed and reliable answers from our experienced and knowledgeable community members.

Which two expressions are equivalent to [tex]\( -2 \frac{4}{9} \)[/tex]? Choose BOTH expressions.

A. [tex]\( -1\left(\frac{4}{9}+\frac{4}{9}\right) \)[/tex]
B. [tex]\( -1\left(2+\frac{4}{9}\right) \)[/tex]
C. [tex]\( -2+\left(-\frac{4}{9}\right) \)[/tex]
D. [tex]\( -2+\frac{4}{9} \)[/tex]
E. [tex]\( 2+\frac{4}{9} \)[/tex]


Sagot :

To determine which two given expressions are equivalent to [tex]\(-2 \frac{4}{9}\)[/tex], let's carefully break down and evaluate each expression step-by-step.

First, convert the mixed number [tex]\(-2 \frac{4}{9}\)[/tex] to an improper fraction or a decimal:
- [tex]\(-2 \frac{4}{9}\)[/tex] can be written as [tex]\(-2 - \frac{4}{9} \approx -2.4444\)[/tex].

Now, we will evaluate each expression:

1. Expression 1: [tex]\(-1 \left(\frac{4}{9} + \frac{4}{9}\right)\)[/tex]
- First, compute the sum inside the parenthesis: [tex]\(\frac{4}{9} + \frac{4}{9} = \frac{8}{9}\)[/tex].
- Then, multiply by [tex]\(-1\)[/tex]: [tex]\(-1 \left(\frac{8}{9}\right) = -\frac{8}{9} \approx -0.8889\)[/tex].
- This does not equal [tex]\(-2 \frac{4}{9}\)[/tex].

2. Expression 2: [tex]\(-1 \left(2 + \frac{4}{9}\right)\)[/tex]
- First, compute the sum inside the parenthesis: [tex]\(2 + \frac{4}{9} = 2 \frac{4}{9} \approx 2.4444\)[/tex].
- Then, multiply by [tex]\(-1\)[/tex]: [tex]\(-1 \left(2.4444\right) = -2.4444\)[/tex].
- This is equal to [tex]\(-2 \frac{4}{9}\)[/tex].

3. Expression 3: [tex]\(-2 + \left(-\frac{4}{9}\right)\)[/tex]
- Convert to a single addition operation: [tex]\(-2 - \frac{4}{9} \approx -2 - 0.4444 \approx -2.4444\)[/tex].
- This is equal to [tex]\(-2 \frac{4}{9}\)[/tex].

4. Expression 4: [tex]\(-2 + \frac{4}{9}\)[/tex]
- Perform the addition operation: [tex]\(-2 + \frac{4}{9} \approx -2 + 0.4444 \approx -1.5556\)[/tex].
- This does not equal [tex]\(-2 \frac{4}{9}\)[/tex].

5. Expression 5: [tex]\(2 + \frac{4}{9}\)[/tex]
- Perform the addition operation: [tex]\(2 + \frac{4}{9} \approx 2 + 0.4444 \approx 2.4444\)[/tex].
- This does not equal [tex]\(-2 \frac{4}{9}\)[/tex].

The expressions that are equivalent to [tex]\(-2 \frac{4}{9}\)[/tex] are:

- [tex]\(\boxed{-1 \left(2 + \frac{4}{9}\right)}\)[/tex]
- [tex]\(\boxed{-2 + \left(-\frac{4}{9}\right)}\)[/tex]