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3 years ago

Will mark best answer.. The equations in this sytem were added to solve for x. What is the value of x? -2x+y=8 5x-y=-5 3x=3

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

5 0

The value of x=1

Step-by-step explanation:

Given the equations as :

-2x + y= 8

5x - y= -5 ------adding the equations

---------------------

3x = 3 -------dividing both sides by 3

x = 1

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Simultaneous equations : brainly.com/question/12318095

Keywords : equations, system, value

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polet [3.4K]

Answer:

(-5,-28)

Step-by-step explanation:

Given

$f(x)=x^2+10x - 3$

Required

Find the coordinates of the vertex

Given that the function is a quadratic function;

The general form of a quadratic function is

$f(x)= ax^2+bx +c$

By comparison;

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To calculate the coordinates of the vertex;

we start by calculating the x-coordinate;

$x = \frac{-b}{2a}$

Substitute 10 for b and 1 for a

$x = \frac{-10}{2*1}$

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Substitute $x = -5$ in the given function;

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$y=25-50 - 3$

$y=-28$

<em>Hence, the coordinates of the vertex is (-5,-28)</em>

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3 years ago

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3 years ago

Read 2 more answers