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astra-53 [7]
3 years ago
12

Which expression is equivalent to 5r+11r−2?

Mathematics
1 answer:
Readme [11.4K]3 years ago
7 0

Answer:

2(8r-1)

Step-by-step explanation:

collect like terms

5r+11r=16r

16r-2

then factor out a 2

2(8r-1)

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The correct option is (B) 69.7%.

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cestrela7 [59]
Please attach a photo so I may help you.
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Reasoning triangle $abc$ has a perimeter of $12$ units. the vertices of the triangle are $a(x,\ 2),\ b(2,-2)$ , and $c(-1,\ 2)$
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hmmm let's find the distance between B and C first off.

~~~~~~~~~~~~\textit{distance between 2 points} \\\\ B(\stackrel{x_1}{2}~,~\stackrel{y_1}{-2})\qquad C(\stackrel{x_2}{-1}~,~\stackrel{y_2}{2})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ BC=\sqrt{(~~-1 - 2~~)^2 + (~~2 - (-2)~~)^2} \implies BC=\sqrt{(-1 -2)^2 + (2 +2)^2} \\\\\\ BC=\sqrt{( -3 )^2 + ( 4 )^2} \implies BC=\sqrt{ 9 + 16 } \implies BC=\sqrt{ 25 }\implies BC=5

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