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mash [69]
2 years ago
15

Select all of the phrases that could be

Mathematics
1 answer:
Norma-Jean [14]2 years ago
3 0

The phrases that can be represented as the algebraic expression, 3n - 3 are: <em>Option 3 and Option 5.</em>

Let's translate each of the given phrases to algebraic expressions in order to determine which of them can be represented as 3n - 3.

<em>Option 1:</em>

3 fewer than n is represented as, n - 3

<em>Option 2:</em>

difference between n and 3 is represented as, n - 3.

<em>Option 3:</em>

3 times n is 3n

3 fewer than 3n is represented as 3n - 3.

<em>Option 4:</em>

product of 3 and n is represented as 3n.

<em>Option 5:</em>

3 less than 3n is represented as 3n - 3.

Therefore, the phrases that can be represented as the algebraic expression, 3n - 3 are: <em>Option 3 and Option 5.</em>

<em />

Learn more about algebraic expression on:

brainly.com/question/2164351

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5 0
2 years ago
The sum of two numbers is 21. The larger number is 6 less than twice the smaller number. Find the two numbers.
Vesnalui [34]
Hey there! :D

21= 2x-6+x

21=3x-6

27=3x

x=9

The smaller number is 9. 

The larger number is:

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I hope this helps!
~kaikers
3 0
3 years ago
If john makes a contribution to a charity fund at school, the average contribution size will increase by 50% reaching $75 per pe
Sonja [21]

Answer:

Z= 75*6 -250=200

So then the correct answer is B. $200.

Step-by-step explanation:

Notation

Let X be the average contribution size before John makes his contribution.

Let Y be the total contribution size before John makes his contribution.

Let Z be John's contribution.

We know that for this case $ 75 represent the original average amount before the contribution with 50% increase so we can set up the following equation in order to find the original average amount

1.5 X = 75

And solvong for X we got:

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Now we can find the total contribution before the donation with the following proportion:

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And then with the formula of average taking in count the 6 values we can find the size of donation Z like this:

\frac{Y+Z}{6}= 75

\frac{250+Z}{6}= 75

Z= 75*6 -250=200

So then the correct answer is B. $200.

5 0
3 years ago
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