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Over [174]
3 years ago
13

What is the formula for axis of symitry and vertex of a porabala?

Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
5 0
Axis of symmetry is x=-b/2a

& the coordinate of the vertex (-b/2a, b^2/4a)
blsea [12.9K]3 years ago
3 0
Axis of Symmetry: x = -b/2a
Vertex: y = Ax² + By + c  
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2 years ago
Which graph represents the given inequality? y &gt; 4x + 2
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4 0
3 years ago
The solution of equation 3n - 7 = 3 - 2n is????? I need this ans fast plsss
adoni [48]

Answer:

n=2

Step-by-step explanation:

3n-7=3-2n

5n=10 (add 2n on both sides and also add 7 on both sides of the equal sign)

n=2

DUBS

6 0
3 years ago
Read 2 more answers
What percentage of babies born in the United States are classified as having a low birthweight (&lt;2500g)? explain how you got
lawyer [7]

Answer:

2.28% of babies born in the United States having a low birth weight.

Step-by-step explanation:

<u>The complete question is</u>: In the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g. What percent of babies born in the United States are classified as having a low birth weight (< 2,500 g)? Explain how you got your answer.

We are given that in the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g.

Let X = <u><em>birth weights of newborn babies</em></u>

The z-score probability distribution for the normal distribution is given by;

                          Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean = 3,500 g

            \sigma = standard deviation = 500 g

So, X ~ N(\mu=3500, \sigma^{2} = 500)

Now, the percent of babies born in the United States having a low birth weight is given by = P(X < 2500 mg)

         

   P(X < 2500 mg) = P( \frac{X-\mu}{\sigma} < \frac{2500-3500}{500} ) = P(Z < -2) = 1 - P(Z \leq 2)

                                                                 = 1 - 0.97725 = 0.02275 or 2.28%

The above probability is calculated by looking at the value of x = 2 in the z table which has an area of 0.97725.

4 0
3 years ago
Find the ratio created when AB is partitioned by C.
Blizzard [7]

Answer:

Step-by-step explanation:

From the picture attached,

Segment AB has been divided into four equal parts.

Let each part measures equal length = 1 unit

Point C is 2 units apart from both the points A and B.

Length of AC = Length of BC = 2 units

Therefore, point C will be the mid point of segment AB.

And ratio of AC and BC = 1:1

AC:BC = 1:1

Similarly, AC:AB = 2:4

                           = 1:2

And BC:AB = 2:4

                   = 1:2

8 0
3 years ago
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