2 years ago

In the figure find the value of x

2 answers:

7 0

The two angles are equal because it’s an isosceles triangle. So:
180 - 8x = 2x - 60
We put variables on one side and numbers on the other side, with changing positive to negative and the opposite.
180 + 60 = 2x + 8x
240 = 10x
24 = x

NikAS [45]2 years ago

4 0

Answer:

I'm not that sure but I really feel like it's 15

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Solve the quadratic equation by using the quadratic formula. if the solution are not real, enter N/A 3x^2-7x+1=0

Vsevolod [243]

Answer:

$\displaystyle x=\frac{7\pm\sqrt{37}}{6}$

Step-by-step explanation:

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\frac{-(-7)\pm\sqrt{(-7)^2-4(3)(1)}}{2(3)}\\\\x=\frac{7\pm\sqrt{49-12}}{6}\\ \\x=\frac{7\pm\sqrt{37}}{6}$