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astraxan [27]
3 years ago
14

If the vertex of a parabola is (2,-9) and another point on the curve is (5,-18). What is the coefficient of the squared expressi

on in the parabola's equation?
Mathematics
1 answer:
Snezhnost [94]3 years ago
7 0
Parabola form : (y-k) = a(x-h)², where h and k are the vertex(h , k)
The vertex is given (2 , - 9), the equation of the parabola becomes:
y+9 = a(x-2)²
But we know this curve passes through (5, - 18)
Plug the respective values of x & y in the equation:
-18 +9 = a(5-2)² → - 9 = 9a & a = -9/9 and a= - 1
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2 years ago
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Answer:

Shyla will pay about 63 cents to cover the box

Step-by-step explanation:

Length of the box ( l ) = 7 inches

Width of the box (b) = 11 inches

Height of the box (h) = 8 inches

<em></em>

<em>We can solve this equation by following two simple steps.</em>

1. The first step is to find the total surface area of the box. This is the total area that the decorative fabric will be covering.

We can get this by the following formula:

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2 years ago
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3 years ago
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Triangle WXY has coordinates W(1, 4), X(1, 1), and Y(4, 1). Which of the following sets of points represents a dilation of trian
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The answer is the second option, option B, which is: B. <span>W'(2,8), X'(2,2), Y'(8,2)
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5 0
3 years ago
In a game the player wins if he rolls a 6 on a number cube .if the number cube is rolled 18 times then what is the reasonable
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<h2>Answer:</h2>

Prediction for the number of unsuccessful rolls is 15.

<h2>Step-by-step explanation:</h2>

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I hope I helped you. I will be really happy, If you mark my answer as the brainliest.Your David

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