In order for the economy to be strong, businesses must _____.
1 answer:
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The value of x must be 25.0. The correct option is the second option- 25.0
<h3>Solving Linear equations </h3>From the question, we are to determine the value of x
From the given diagram, we can write that
m ∠SOR + m ∠UOR + m ∠TOU = 180° (<em>Sum of angles on a straight line</em>)
∴ (2x +8)° + (3x - 14)° + (3x -14)° = 180°
2x° + 8° + 3x° -14° + 3x° -14° = 180°
Collect like terms
2x° + 3x° + 3x° + 8° - 14° -14° = 180°
8x° -20° = 180°
8x° = 180° + 20°
8x° = 200°
x = 200/8
x = 25.0
Hence, the value of x must be 25.0. The correct option is the second option- 25.0
Learn more Solving linear equations here: brainly.com/question/1413277
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Answer:
{ 4 }
Step-by-step explanation:
First you need to solve the equation. Then you need to write the solutions as a set.
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I like to use a graphing calculator to solve equations involving roots. That helps avoid extraneous solutions. Here, the graph of the left side intersects the graph of the right side at x=4. There is exactly one solution, so the solution set is ...
{ 4 }
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Solving this algebraically, you would isolate the radical, then "undo" it by squaring both sides of the equation. Then solve the resulting quadratic. That will have 2 solutions, only one of which will work in the original equation.
√(5x +16) -2 = 3x -8 . . . . given
√(5x +16) = 3x -6 . . . . . . add 2
5x +16 = (3x -6)^2 . . . . . square both sides
5x +16 = 9x^2 -36x +36 . . . . expand the square
9x^2 -41x +20 = 0 . . . . . . subtract (5x+16) to put into standard form
Factors of 9·20 = 180 that have a sum of 41 are 5 and 36, so we can rewrite this equation as ...
9x^2 -36x -5x +20 = 0
9x(x -4) -5(x -4) = 0 . . . . . . factor by pairs
(9x -5)(x -4) = 0
The values of x that make this equation true are the values that make the factors be zero: 5/9 and 4. Trying these in the equation, we find ...
√(5(5/9) +16) -2 = 13/3 -2 = 2 1/3 . . . . value of the left side for x = 5/9
3(5/9) -8 = -6 1/3 . . . . . . value of the right side for x=5/9; not the same
x = 5/9 is NOT A SOLUTION
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√(5(4)+16) -2 = √36 -2 = 4 . . . . value of the left side for x = 4
3(4) -8 = 12 -8 = 4 . . . . . . value of the right side for x=4. These are the same, so ...
x = 4 is a solution
The set of solutions is then ...
{ 4 } . . . . . solution set
