3 years ago

2(x+y)/3 for x =6and y=7

Mathematics

2 answers:

Blizzard [7]3 years ago

7 0

Answer:

26/3

Step-by-step explanation:

SOVA2 [1]3 years ago

4 0

Answer:

Exact form: 26/3

Mixed number 8 2/3

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ludmilkaskok [199]

Use the Pythagorean theorem /look at the picture/

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$1.\\x^2+13^2=28^2\\x^2+169=784\ \ \ |subtract\ 169\ from\ both\ sides\\x^2=615\\\boxed{x=\sqrt{615}}\\\\3.\\x^2+10^2=28^2\\x^2+100=784\ \ \ \ |subtract\ 100\ from\ both\ sides\\x^2=684\\x=\sqrt{684}\\x=\sqrt{36\cdot19}\\x=\sqrt{36}\cdot\sqrt{19}\\\boxed{x=6\sqrt{19}}$