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3 years ago

please help me i need to turn in assignment!!!!! i will mark the answer brainliest. plz be descriptive!!!

Mathematics

1 answer:

kumpel [21]3 years ago

4 0

Answer: D. 150

Step-by-step explanation:

Given equation: $3(3x-10)=5(x+10)$ , it shows the relationship between the perimeter of an equilateral triangle and the perimeter of an equilateral triangle.

Consider $3(3x-10)=5(x+10)$

$\Rightarrow\ 9x-30=5x+50\\\\\Rightarrow\ 9x-5x= 50+30\\\\\Rightarrow\ 4x= 80\\\\\Rightarrow\ x=\dfrac{80}{4}\\\\\Rightarrow\ x= 20$

Now, perimeter of pentagon = 5(x+10) = 5 (20+10)

= 5(30) = 150

Hence, option D is correct.

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3 years ago

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