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algol [13]
4 years ago
11

Which function has a vertex at (2, –9)?

Mathematics
1 answer:
mihalych1998 [28]4 years ago
6 0

Answer:

The answer is C f(x)=(x – 5(x + 1)

Step-by-step explanation:

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x squared plus y squared equals 80. My daughter has to work out what x and y are. I have worked it out by trial and error, but k
olya-2409 [2.1K]


you Need to think of 2 square numbers that add up to make 80

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or

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7 0
4 years ago
A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade po
Vinil7 [7]

Answer:

80% Confidence interval:  (0.4603,0.7397)

Step-by-step explanation:

We are given the following in the question:

Sample mean, \bar{x} = MD = 0.60 points

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Sample variance =  0.09

Sample standard Deviation =

=\sqrt{\text{Sample Variance}} = \sqrt{0.09} = 0.3

80% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 8 and}~\alpha_{0.20} = \pm 1.397  

0.60 \pm 1.397(\frac{0.3}{\sqrt{9}} ) = 0.60 \pm 0.1397 = (0.4603,0.7397)

8 0
4 years ago
Write an equation in point-slope form for the line that passes through the point with the given slope. point: (4,2) and m=3
Masja [62]

Answer:

I think the answer is y = 3x - 10

Step-by-step explanation:

3 0
3 years ago
A square has a perimeter of 36 cenimeters. what is the length of each side explain your answer
kodGreya [7K]
Each side is 9 cm. a square has equal sides, so 36 divided by 4= 9
3 0
3 years ago
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Answer:

Usa un calculadora.  -4 +5 = 1, 16 +1 = ___

Step-by-step explanation:

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