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stepladder [879]
2 years ago
8

21. Find the perimeter of the triangle: 60 degrees, 60 degrees,

id="TexFormula1" title="4 \sqrt{15 } " alt="4 \sqrt{15 } " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
barxatty [35]2 years ago
6 0

Answer:

120+ 4(square root)15

120+15.49=135.49

135.49 is the perimeter

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x=-1\\y=-1

Step-by-step explanation:

5x+5y=-10\\3x-7y=4

Let's solve the first equation for either x or y. I'll do it for x.

5x+5y=-10

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-----------------------------------------------------------------------------------------------------------

Take this value of y and replace it in the first equation to find the value of x.

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