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ElenaW [278]
4 years ago
7

Which expression is equivalent to 9(w+8)? 72W 9W+72 9W+8 17W

Mathematics
2 answers:
Step2247 [10]4 years ago
5 0

We can apply the distributive property to 9(w + 8) to find an equivalent expression.

9w + 72

The equivalent expression is the 2nd option, or 9w + 72,

Zepler [3.9K]4 years ago
4 0

Answer:

9W + 72

Step-by-step explanation:

using the distributive property, you would multiply both the w and the 8 by 9 to obtain 9*w and 9*8. 9*w + 9*8 = 9w + 72.

This works because if you have 9 of (w+8), you have 9 w's and 9 8's. Adding these up is simply multiplying 9 by w (since there are 9 w's) and 9 by 8 (since there are 9 8's).



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3 years ago
Which graph best represents the relationship between time and the number of teams registered?
alexdok [17]
<h2>Explanation:</h2><h2></h2>

The complete question is in the attached file. So we have to choose between two graphs. On of them is a linear model while the other is an exponential model. From the statements, we have a relationship between time and the number of teams registered. So we can establishes variables in the following form:

x:\text{Time} \\ \\ y:\text{Number of teams registered}

We also know that each week 6 teams register to participate, so:

\bullet \ \text{For week 0:} \rightarrow \text{0 teams registered} \\ \\ \bullet \ \text{For week 1:} \rightarrow \text{6 teams registered} \\ \\ \bullet \ \text{For week 2:} \rightarrow \text{12 teams registered (Because 6+12)} \\ \\ \bullet \ \text{For week 3:} \rightarrow \text{18 teams registered (Because 12+6)}

As you can see, as x increases one week, y increases at a constant ratio of 6. Therefore, this can be modeled by a linear function given by the form:

y=6x

In conclusion, <em>the linear model (first graph below) is the one that bests represents  the relationship between time and the number of teams registered.</em>

7 0
3 years ago
Rita is spending more time at home to study and practice math. Her efforts are finally paying off. On her first assessment she s
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Answer:

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This is the first assessment greater then 85, so the 7th assessment

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3 years ago
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Answer:

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The scale is 1 inch = 0.5 ft.

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3 years ago
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