4 years ago

What is the value of x?

2 answers:

7 0

Sine rule = c/SinC = b/SinB = a/SinA

SO 13/Sin40 = x/Sin87
20.224409... = x/Sin87
x = 20.19669...

So rounded to the nearest tenth,
x = 20.2

zhenek [66]4 years ago

6 0

I took the K12 test

The answer is 16.3 cm

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Step-by-step explanation:

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$AB=\sqrt{(2-(-3))^2+(4-0)^2}\\\\ =\sqrt{(2+3)^2+4^2}\\\\ =\sqrt{5^2+4^2} \\\\=\sqrt{25+16}\\\\ =\sqrt{41}\\$

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$AD=\sqrt{(-4-(-3))^2+(-3-0)^2} \\\\=\sqrt{(-4+3)^2+(-3)^2} \\\\=\sqrt{(-1)^2+(-3)^2} \\\\=\sqrt{1+9}\\\\=\sqrt{10} \\\\ =3.16$

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