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Alex73 [517]
2 years ago
11

The vertex of a parabola that opens downward is at (0, 4). The vertex of a second parabola is at (0, –4). If the parabolas inter

sect at two points, which statement must be true?
Mathematics
2 answers:
dmitriy555 [2]2 years ago
5 0

Answer:

d. just got it right on the unit testttttt

Step-by-step explanation:

erma4kov [3.2K]2 years ago
4 0
Many statements can be true about those parabolas, so you need to include the list of choices.

This is the list of answer choices that I found for this same question:

<span>A. The second parabola opens downward.
B. The second parabola opens upward.
C. The points of intersection are on the x-axis.
D. The points of intersection are of equal distance from the y-axis.

While A, B or C may be or may not be true, D has to be true.

D. has to be true because the symetry axis of both parabolas is x = 0, so the intersection points will  be necesarily to the same distance of the x-axis and the y-axis.

Answer: </span>
<span>The points of intersection are of equal distance from the y-axis. </span>
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Write the equation with both x= 8 and x= -8 as solution
nlexa [21]

Answer:

y = x^2 - 64

Step-by-step explanation:

Hello!

We can use the factored form of a Quadratic to find an equation with 8 and -8 as our solution.

<h3>Factored Form: y = a(x - h)(x - k)</h3>

The value in each parenthesis should be 0. So 8 and -8 can be flipped and used for h and k.

  • y = a(x - h)(x - k)
  • y = a(x - 8)(x+ 8)

This will give roots 8 and -8 for x.

  • y = 1(x - 8)(x + 8)\\
  • y = x^2 - 64

A possible equation is y = x^2 - 64.

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1 year ago
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A Petri dish contained 50 bacteria at 8:00am the number of bacteria triples each hour. After what time will there be at least 1,
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There will be at least 1,350 bacteria in the Petri dish in 3 hours, or at 11:00am.
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3 years ago
Solve the right triangle. Round decimal answers to the nearest tenth.
ZanzabumX [31]

Answer:

c=√a²+b²

Step-by-step explanation:

You can use this equation to solve it.

8 0
2 years ago
Determine the solution and the reasoning that justifies the solution to the systems of equations.
Lena [83]

Answer:

<u>Option 2</u>

(2,8), because the graph of the two equations intersects at this point

Step-by-step explanation:

Just looking at the graph, you can tell that the point (2,8) is where the two lines intersect.

Hope this helped! :)

8 0
2 years ago
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