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1 year ago

7

What is the solution to the following equation? 12 + 3x+7 = 0

2 answers:

ladessa [460]1 year ago

4 0

3x = 0 -12 -7
x = 19/3
x = 6.333

Diano4ka-milaya [45]1 year ago

3 0

The answer is x=-6.33333 (-19/3)

First, add like terms (12+7), which would equal to 19.
Then isolate the variable by subtracting 19 and adding it to the other side of the equal sign.
Now with this new equation of 3x=-19, isolate again by dividing 3 from x and do the same thing to the other side (-19/3).
The answer should be -6.33 repeating, but in algebra you would give a more simplified answer. This would be -19/3

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gavmur [86]

Answer:

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Step-by-step explanation:

Let x and y represent tacos and double Deckers respectively.

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3x+3y=11.25

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2 years ago

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Reptile [31]

Answer:

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Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

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This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this problem, we have that:

$f(x) = x^{2} + 3x - 1$

So

$a = 1, b = 3, c = -1$

$\bigtriangleup = 3^{2} - 4*1*(-1) = 13$

$x_{1} = \frac{-3 + \sqrt{13}}{2*1} = 0.3$

$x_{2} = \frac{-3 - \sqrt{13}}{2*1} = -3.3$

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Answer:

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3 years ago

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