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Sonja [21]
3 years ago
10

PLEASE HELP ME ASAP! WILL AWARD BRAINLIEST! IT'S ABOUT SIMULTANEOUS EQUATIONS. TYSM ;)

Mathematics
1 answer:
Hatshy [7]3 years ago
7 0

Plug in your Y value into the bottom equation like so:

4x + 3x-3=11, combine like terms

7x-3=11 solve for x

7x= 14

x=2

Plug in x value into first equation

y = 3(2) -3

y= 6-3, y = 3

answer: (2,3)

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3 0
4 years ago
Read 2 more answers
Find the equation of the directrix of the parabola found in part A.
elena-s [515]

The specific equation of the parabola can be found by plugging the given

values of the variables of the general equation.

<h3>Correct Response;</h3>
  • \displaystyle The \ equation \ of \ the \ parabolic \ reflector \ is; \ \underline{ y = \frac{1}{12} \cdot x^2}
<h3>Method used to obtain the above equation;</h3><h3 /><h3>Given parameters;</h3>

The vertex of the parabola is at the origin with coordinates (0, 0)

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<h3>Required:</h3>

The equation that models the parabola.

<h3>Solution:</h3>

The vertex form of the equation of a parabola is y = a·(x - h)² + k

The above equation can be expressed as (x - h)² = 4·p·(y - k)

Where in a vertical parabola;

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p = 3 = The distance of the focus from the vertex

Therefore, the coordinates of the focus = (0 + 3, 0) = (3, 0)

The equation of the parabola is therefore;

(x - 0)² = 4×3 × (y - 0) = 12·y

x² = 12·y

  • \displaystyle The \ equation \ of \ the \ parabola \ that \ models \ the \ reflector \ is; \ \underline{ y = \frac{1}{12} \cdot x^2}

Learn more about the equation of a parabola here:

brainly.com/question/2131669

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sleet_krkn [62]
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How many 4 digit palidromes are there?
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