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vampirchik [111]
3 years ago
14

Which expressions ere equivalent to x+x+x+2​

Mathematics
2 answers:
rusak2 [61]3 years ago
4 0

Answer:

3x+2

Step-by-step explanation:

We are given that an expression

x+x+x+2

We have to find the equivalent expression equals to given expression.

In order to get an equivalent expression of given expression we will combine like terms

x+x+x+2

Combining like terms

Then, we get

3x+2

Hence, the given expression is equal to

3x+2

Andrei [34K]3 years ago
3 0

3x + 2

since x + x + x is 3x.

Or you can be creative

(6x+4)/2

im just trying to hit the 20 chac minimum.

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A rectangular plot of ground is 10 meters longer than it is wide. It’s area is 20,000 square meters what equation will help find
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x(x+10)=20,000

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3 years ago
An arithmetic sequence with a third term of 8 and a constant difference of 5
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\bf n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad  \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ d=\textit{common difference}\\ \hrulefill\\[0.5em] a_3=8\\ n=3\\ d=5 \end{cases} \\\\\\ a_3=a_1+(3-1)5\implies 8=a_1+(2)5 \\\\\\ 8=a_1+10\implies -2=a_1 \\\\\\ \begin{cases} a_1=-2\\ d=5 \end{cases}\implies a_n=-2+(n-1)d

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3 years ago
Boston, Massachusetts had a population of 617,594 people during January 1 2010, and 675,647 people on January 1 2020.
tigry1 [53]

Answer:

  • See below

Step-by-step explanation:

<u>Exponential function is:</u>

  • y = abˣ

<u>If we consider the time difference in years as x and the initial population as a, then we get:</u>

  • 675647 = 617594*b¹⁰

<u>Find the value of b:</u>

  • b¹⁰ = 675647/617594
  • b¹⁰ = 1.09399864636
  • b = 1.09399864636^(1/10)
  • b = 1.009 (rounded)

<u>The equation we got is:</u>

  • y = 617594*1.009ˣ

Here we have y- population after x years since 2010, x - the number of years since 2010 and 1.009 is the population growth rate.

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