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Zepler [3.9K]
2 years ago
15

A building has an entry the shape of a parabolic arch 22 ft high and 28 ft wide at the base, as shown below.

Mathematics
1 answer:
Ivenika [448]2 years ago
5 0
The parabola is at Max of 22
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Can anyone please help me answer this math question right away?
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Roxanne graphed this system of equations to find the solution.
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Answer:

Option C is correct.

She is not correct as she use the wrong y intercepts when graphing the equations.

Step-by-step explanation:

Given the system of equations:

y = \frac{2}{3}x-5         .....[1]

y = -2x+3         .           .....[2]

equate these two equations we get;

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Add 2x to both sides we have;

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Multiply both sides by 3 we get;

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Divide both sides by 8 we get;

x = 3

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y = -2(3)+3 = -6+3

Simplify:

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Therefore, the correct solution for this given system of equation is (3, -3)

You can see the graph of these equations below.

5 0
3 years ago
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Actually, I think the question should be, "In what range(s) of x-values must there be a root of the POLYNOMIAL?" Unless you are working with some real strange maths, polynomials are smooth and continuous. If you drew a smooth and continuous line through the points in the graph, where would the line have to cross the x-axis?


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