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Elis [28]
2 years ago
9

Evaluate the expression when x-3 4x2 - 14x + 4

Mathematics
1 answer:
Lady_Fox [76]2 years ago
6 0

Answer:

82

Step-by-step explanation:

Evaluate 4 x^2 - 14 x + 4 where x = -3:

4 x^2 - 14 x + 4 = 4×(-3)^2 - -3×14 + 4

(-3)^2 = 9:

4×9 - 14 (-3) + 4

4×9 = 36:

36 - 14 (-3) + 4

-14 (-3) = 42:

36 + 42 + 4

| 1 |  

| 4 | 2

| 3 | 6

+ | | 4

| 8 | 2:

Answer:  82

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Answer:

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Third quartile => 22

Range => 13

First quartile => 15

Step-by-step explanation:

Order your data set, from the least amount to the highest amount:

$12, $14, $15, $15, $15, $15, $16, $22, $24, $25

Interquartile range (IQR) = third quartile (Q3) - first quartile (Q1)

Q1 = the middle value of the lower part of the data set, from the median to your left.

Q3 = the middle value of the upper part of the data set, from the median to your right.

The median lies between the 5th and 6th value that is enclosed in the parenthesis below:

$12, $14, ($15), $15, $15,[Median], $15, $16, ($22), $24, $25

The median divides the data set into upper and lower part.

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Third quartile: Q3 = $22

IQR = $22 - $15 = $7

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Answer:

Situation                                                                                    Best measure  

1. The weights of wrestlers on the team varies by 74 lbs.     range


2. The most popular M&M's color is green.                           mode


3. The mean price for an mp3 download is $1.96.                 mean


4. Half of the students in 3rd hour PE are 15 or older.           median


Step-by-step explanation:

1. The weights of wrestlers on the team varies by 74 lbs. This is the range, the difference between the maximum and the minimum value.

2. The most popular M&M's color is green. This is the mode, the value more repeated.

3. The mean price for an mp3 download is $1.96. This is the mean.

4. Half of the students in 3rd hour PE are 15 or older. This is the median, the value in the half of the values


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