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3 years ago

Please help me I am awful at graphing. it’s due in a few min and worth half my grade someone please help explain!

Mathematics

1 answer:

Vinil7 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

y=x² +8x +7

first parabola opens up because variable a is positive

the axis of symmetry = =4 ( which is the case or have of the vertex)

v(h,K)

h=-b/2a = -8/2(1)=

h=-4

vertex(-4,-9)

focus(-4,-35/4)

diretrix : y = -37/4

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Calculate the mean and median of each data set, and determine what type of distribution it has. Data Set 1 5 8 9 6 3 2 10 8 5 4

Bad White [126]

Answer:

Data Set 1:

Mean = 5.73

Median = 5

Data Set 2:

Mean = 5.34

Median = 5.64

Step-by-step explanation:

<u>To find the mean, you need to add up all the data, and then divide this total by the number of values in the data.</u>

<u>Data Set 1:</u>

5 + 8 + 9 + 6 + 3 + 2 + 10 + 8 + 5 + 4 + 3 = 63

There are 11 values, so you divide the total by 11:

63 ÷ 11 = 5.7272.. ≈ 5.73

<u>Data Set 2:</u>

8 + 7 + 3 + 2 + 4 + 6 + 2 + 7 + 4 + 9 + 6 + 5 + 5.27 + 6 + 5.73 + 5.55 = 85.55

There are 16 values, so you divide the total by 16:

85.55 ÷ 16 = 5.34

<h3>The Median:</h3>

<u>To find the median, you need to put the values in order, then find the middle value. If there are two values in the middle then you find the mean of these two values.</u><u> </u>

<u>Data Set 1:</u>

The numbers in order:

2, 3, 3, 4, 5, (5), 6, 8, 8, 9, 10

The middle value is marked in brackets, and it is 5.

So the median is 5

<u>Data Set 2:</u>

2, 2, 3, 4, 4, 5, 5.27, (5.55, 5.73), 6, 6, 6, 7, 7, 8, 9

This time there are two values in the middle. They have been in brackets The median is found by calculating the mean of these two values:

(5.55 + 5.73) ÷ 2 = 5.64

So, the median is 5.64

<u>-TheUnknownScientist</u><u> 72</u>

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Answer:

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