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3 years ago

Adding and subtracting polynomialsSubtract 2x² + 6x - 5 from 7x² + 3x + 4

Mathematics

2 answers:

allsm [11]3 years ago

4 0

Answer: 5x^2 - 3x + 9

Step-by-step explanation:

Inessa [10]3 years ago

3 0

Answer:

5x^2 - 3x + 9

Step-by-step explanation:

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Consider these four data sets. Set A: {32, 12, 24, 46, 18, 22, 14} Set B: {4, 12, 11, 14, 11, 5, 12, 13, 18, 14} Set C: {5, 4, 9

drek231 [11]

SET A

The elements of this set are,

$32,12,24,46,18,22,24$

We arrange this data set in ascending order to get,

$12,18,22,24,24,32,46$

The median for this data set is

$median = 24$

The mean for this data set can be calculated using the formula,

$\bar X = \frac{ \sum x}{n}$

This implies that,

$\bar X = \frac{ 12 + 18 + 22 + 24 + 24 + 32 + 46}{7}$

$\bar X = \frac{154}{7} = 22$
This data set is negatively skewed because the mean is less than the median.

SET B

This set contains the elements,

$4, 12, 11, 14, 11, 5, 12, 13, 18, 14$

We arrange the elements of this set in ascending order to obtain,

$4,5,11,11,12,12,13,14,14,18$

The median for this data set is,

$median = \frac{12 + 12}{2} = 12$

The mean is

$\bar X = \frac{4 + 5 + 11 + 11 + 12 + 12 + 13 + 14 + 14 + 18}{10}$

.
$\bar X = \frac{114}{10} = 11.4$

This data set is negatively skewed because the mean I'd less than the median.

SET C

The set C has elements,
$5, 4, 9, 12, 14, 26, 22, 18$

We arrange this set in ascending order to get,

$4,5,9,12,14,18,22,26$

The median of this data set is

$median = \frac{12 + 14}{2} = 13$

The mean of this data set is
$\bar X = \frac{4 + 5 + 9 + 12 + 14 + 18 + 22 + 26}{8}$

$\bar X = \frac{110}{8} = 13.75$

This is a positively skewed distribution because the mean is greater than the median

SET D

The elements of this set are

$1, 1, 1, 2, 2, 3, 3, 4, 5, 6$

The median of this data set is

$median = \frac{2 + 3}{2} = 2.5$

The mean is
$\bar X= \frac{1 + 1 + 1 + 2 + 2 + 3 + 3 + 4+ 5 + 6}{10}$

$\bar X= \frac{28}{10} = 2.8$

This data set is positively skewed because the mean is greater than the median.

4 0

3 years ago

Read 2 more answers

a payday loan store charges $40 for one month loan of $300. what annual interest rate is This equivalent to

madreJ [45]

Annual would be $480!

3 0

3 years ago

The usual price of a sweatshirt is 18$, what is its sale price

german

Answer:

$19.08

Step-by-step explanation:

18 + 6% = (18 x 1.06) = 19.08

8 0

3 years ago

Simplify 2x(5x + 3) + 7(5x + 3)

zubka84 [21]

Use distributive property to solve.
2x(5x+3) + 7(5x+3)
1. distribute

2x•5x = 10x^2
2x•3= 6x

10x^2+6x

7•5x = 35x
7•3= 21

35x+21

2. combine like terms

10x^2+6x+35x+21

10x^+ 41x +21 [final answer]

6 0

4 years ago

An angle through 1/6 of circle. What is the measure of this angle?

azamat

Answer:

60 degrees

Step-by-step explanation:

4 0

4 years ago

Adding and subtracting polynomialsSubtract 2x² + 6x - 5 from 7x² + 3x + 4​

Adding and subtracting polynomialsSubtract 2x² + 6x - 5 from 7x² + 3x + 4