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2 years ago

Which expression is equivalent to 3xy + 10xy - 5x + 2x - 2yx? A) 15xy + 7x Eliminate B) 13xy - 7x - 2yx C) -8xy D) -3x + 11xy

Mathematics

2 answers:

julsineya [31]2 years ago

5 0

Answer: D) -3x + 11xy

Step-by-step explanation:

Given expression= $3xy+10xy-5x+2x-2yx$

To find which expression is equivalent to the given expression, we need to first combine like terms, we get

$3xy+10xy-2xy-5x+2x\\=13xy-2xy-3x\\=11xy-3x$

This is equivalent to $-3x+11xy$

Hence D is the right answer, the given expression is equivalent to $-3x+11xy$ .

Vedmedyk [2.9K]2 years ago

3 0

3xy + 10xy - 5x + 2x - 2yx

Add 3xy to 10xy

13xy - 5x + 2x - 2yx

Add -5x to 2x

Final Answer: B.) 13xy -3x - 2yx

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tresset_1 [31]

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20 , 20 , 30 will produce a triangle

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* Lets study how to know if the lengths of the three segments

can formed a triangle

- It is a fact that in any triangle the sum of the smallest two sides

must be greater than the largest side

- Lets study some examples

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# If the lengths of the three segments are 5 , 7 , 12

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# If the lengths of the three segments are 10 , 12 , 24

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∴ 10 + 12 = 22

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* Now lets solve the problem

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2 years ago

8.45 At some point in the season, the Unicorns had won 60% of their basketball games. After that point, they won 8 more games an

ololo11 [35]

Answer:

The total number of games won by Unicorn is 40.

Step-by-step explanation:

We are given with a word problem
We are asked to find the number of unicorns played during the season
We can do this in two steps

Step 1: Finding the win percentage

Step 2: Finding the number of unicorns played during the season

Step 1 of 2

Let the number of games played by unicorn be x.The unicorn won 60% of the first x-10 games That is $\frac{60}{100} \times(x-10)$

Combining the 8 games we get,

$\begin{gathered}\frac{60}{100}(x-10)+8=\frac{60}{100} \times x-\frac{60}{100} \times 10+8 \\0.6 x-6+8=0.6 x+2\end{gathered}$

Step 2 of 2

The unicorn totally won 65% of the games played.

That is $\frac{65}{100} \times x=0.65 x$

Equating both the equation gives

$\begin{gathered}0.6 x+2=0.65 x \\2=0.65 x-0.6 x \\2=0.05 x \\\frac{2}{0.05}=x \\40=x\end{gathered}$

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