18- (-3) ^3 +3•2 what would be the answer and how

Please help, if explained i’ll give brainlest, please be serious thank you. this is due in 30 minutes.

marin [14]

Answer:

96 laps

Step-by-step explanation:

2 hours = 2 * 60 = 120 minutes

So now the question would be as given below:

8 laps in 10 minutes so how many laps in 120 minutes.

Since, no. of laps and minutes are in proportion.

$\therefore \: \frac{8}{10} = \frac{x}{120} \\ \\ x = \frac{8 \times 120}{10} \\ \\ x = \frac{960}{10} \\ \\ x = 96 \:$

3 0

3 years ago

Read 2 more answers

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

Which statement accurately describes the two congruent triangles

inessss [21]

What are the statements and what do the triangles look like?

3 0

3 years ago

The ages in years of 10 teachers of a school are : 32, 41, 28, 54, 35, 26, 23, 33, 38, 40. What is the range of ages of the teac

PSYCHO15rus [73]

Answer:

The range is 31

Step-by-step explanation:

Range is highest number - lowest number.

The highest number is 54 and the lowest is 23.

54-23=31

4 0

3 years ago

A puppy's weight, in y ounces, after x weeks, can be represented by y = 1.2x +2.25. Which statement is a correct interpretation

Grace [21]

Answer:

The puppy's weight increases at the rate of 1.2 ounces per week.

3 0

3 years ago