MATHEMATICS COLLEGE

PLZ Help
This is due by 2:20
itsessencefelton avatar

Answers

Answer 1
Answer:

Answer:

The answer is 60 degrees.

Step-by-step explanation:

The three angles in any triangle add up to 180 degrees.

You know by the box at the bottom right that it's a right triangle and therefore that angle is 90 degrees. They also give you the 30 degree angle at the bottom left. So:

90 degrees + 30 degrees = 120 degrees.

180 degrees (total) - 120 degrees (first 2 angles) = 60 degrees (missing angle)

Hope this helps!

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Answers

Answer:

Ignore the A before the ±, it wouldn't let me type it correctly.

x=(2±√(7) )/(3)

Step-by-step explanation:

3x + 4 = 1 ÷ x

3x + 4 - 4 = 1 ÷ x - 4

3x = 1 ÷ x - 4

3x=(1)/(x) +(x(-4))/(x)

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Ignore the A before the ±, it wouldn't let me type it correctly.

x=\frac{-b±\sqrt{b^(2)-4ac } }{2a}

a = 3

b = 4

c = - 1

x=\frac{-4±\sqrt{4^(2)-4((3)(-1)) } }{2(3)}

x=(-4±√(16-4((3)(-1)) ) )/(2(3))

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x=(-4±√(28 ) )/(2(3))

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x=(-4±√((2)(2)(7) ) )/(2(3))

x=(-4±√(2 ) √(2)√(7) )/(2(3))

x=(-4±2√(7) )/(2(3))

x=(-4±2√(7) )/(6)

Two separate equations

x=(-4+2√(7) )/(6)

x=(2+√(7) )/(3)

x=(-4-2√(7) )/(6)

x=(2-√(7) )/(3)

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Answer:

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