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lianna [129]
3 years ago
15

Help math please thank you

Mathematics
1 answer:
snow_lady [41]3 years ago
3 0

Answer: y=-2(x+3)^2-2

Explanation:

A general form of a parabola is as follows:

y=a(x-x_0)^2+y_0

where the point (x_0,y_0) is the vertex. We know that is (-3,-2), so:

y=a(x+3)^2-2

The remaining unknown is the coefficient "a" and we determine it using the extra point given at (-5,-10). The parabola equation must satisfy this point otherwise the point cannot lie on the parabola:

-10=a(-5+3)^2-2\\-10=4a-2\\\rightarrow a=-2

And so we obtain the equation of the parabola:

y=-2(x+3)^2-2


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Solve 3x + 5 ⩾ x + 17
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Answer:

Step-by-step explanation:

Simplifying

3x + 5 = x + 17

Reorder the terms:

5 + 3x = x + 17

Reorder the terms:

5 + 3x = 17 + x

Solving

5 + 3x = 17 + x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.

5 + 3x + -1x = 17 + x + -1x

Combine like terms: 3x + -1x = 2x

5 + 2x = 17 + x + -1x

Combine like terms: x + -1x = 0

5 + 2x = 17 + 0

5 + 2x = 17

Add '-5' to each side of the equation.

5 + -5 + 2x = 17 + -5

Combine like terms: 5 + -5 = 0

0 + 2x = 17 + -5

2x = 17 + -5

Combine like terms: 17 + -5 = 12

2x = 12

Divide each side by '2'.

x = 6

Simplifying

x = 6

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