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ahrayia [7]
3 years ago
10

What quadratic has roots x=8 and x= -5

Mathematics
1 answer:
Alona [7]3 years ago
5 0

Answer:

So the correct option is X squared -3 X +40

Step-by-step explanation:

If a polynomial has roots x=8 and x=-5, then we know that the factorized form is:

(x-8)(x+5)

So, to find the polynomial we need to expand the polynomials:

(x-8)(x+5) = (x^2 +5x - 8x + 40) = x^2 -3x + 40

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c. Vehicle's color

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Rita is hiking along a trail that is 14.8 miles long. So far she has hiked along one-tenth of the trail.
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1.48 miles

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If the trail is 14.8 miles and Rita has hiked 1/10 of it. Then just multiply 14.8 by 1/10.

14.8 * 1/10 = 1.48 miles.

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To test Upper H 0 : sigma equals 1.6 versus Upper H 1 : sigma less than 1.6​, a random sample of size n equals 21 is obtained fr
kicyunya [14]

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Answer: is answer hope this helps

Step-by-step explanation:

8 0
3 years ago
2. In factored form, a quadratic function can be written as y= (-2- x) (x-8). This parabola goes through the points (-2, 0) and
Trava [24]

The vertex of the given parabola is the point (3, 25).

<h3>How to get the vertex of the parabola?</h3>

If the parabola has roots x₁ and x₂, then the vertex of the parabola is at:

xₙ = (x₁ + x₂)/2

Here the parabola is:

y = (-2 - x)*(x - 8)

We can rewrite that to:

y = -(x + 2)*(x - 8)

Then the two roots are:

x = -2 and x = 8

Then the vertex is at:

xₙ = (8 - 2)/2 = 6/2 = 3

To get the y-value of the vertex, we evaluate the equation in x = 3:

y = -(3+ 2)*(3 - 8) = -5*(-5) = 25

The vertex is (3, 25).

If you want to learn more about parabolas:

brainly.com/question/4061870

#SPJ1

8 0
2 years ago
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