Pls help with math ASAP

Write the expression In factored form. 121m^2-144 Can someone help me?

Zigmanuir [339]

It’s (11m+12)(11m−12)

6 0

3 years ago

A vendor sells h hot dogs and s sodas. If a hot dog costs twice as much as a soda, and if the vendor takes in a total of d dolla

horrorfan [7]

Answer:

The expression for the cost of soda is 100 × $\dfrac{\textrm d}{ \textrm 2h + \textrm s}$ cents

Step-by-step explanation:

Given as :

The quantity of hot dogs sold by vendor = h

The quantity of sodas sold by vendor = s

The total cost of hot dogs and soda = $ d

Let The price of hot dogs = $ x

And The price of soda = $ y

Now, According to question

The price of hot dogs is twice as much as soda

so, $ x = 2 × $ y

I.e x = 2 y

and $ x h + $ y s = $ d

Or , 2 × $ y h + $ y s = $ d

Or, y = $\dfrac{\textrm d}{ \textrm 2h + \textrm s}$

∵ 1 dollar = 100 cents

So, the price of $\dfrac{\textrm d}{ \textrm 2h + \textrm s}$ = 100 × $\dfrac{\textrm d}{ \textrm 2h + \textrm s}$ cents

Hence The expression for the cost of soda is 100 × $\dfrac{\textrm d}{ \textrm 2h + \textrm s}$ cents Answer

5 0

3 years ago

A) sinx+ sin3+ sin4 b) sin2 +2cos .sin5 c) sin2+ 2sin .cos3

Goshia [24]

Answer:

do this ok this is step by step answer

4 0

3 years ago

Look at the model. What division does it show

Alex

That showed be 20/6 which is 3 with a reminder of 2

7 0

3 years ago

Describe Bob’s data in terms of center, spread, and shape.

ra1l [238]

Step-by-step explanation:

Bob's points per game are

5, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15

Calculating Median:

As the median is the middle number in a sorted list of numbers when there is an odd number of terms.

As the the total number of terms = 37

Therefore, the median is the center term which is 10.

5, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15

Calculating Range:

As the given data

5, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15

The range is the difference between the highest and lowest values in the data set.

The lowest value is 5

The highest value is 15

The range = 15 - 5 = 10

Calculating the interquartile range (IQR)

The interquartile range is the difference between the third and first quartiles.

The first quartile (or lower quartile or 25th percentile) is the median of the bottom half of the numbers.

So, the bottom half is

5 7 7 7 8 8 8 8 8 9 9 9 9 9 10 10 10 10

The median of these numbers is 8.5

The third quartile (or upper quartile or 75th percentile) is the median of the upper half of the numbers.

So, the upper half is

10 11 11 11 11 11 12 12 12 12 13 13 13 14 14 14 15 15

The median of these numbers is 12

As

The third quartile is 12

The first quartile is 8.5

Therefore,

The interquartile range = 12 - 8.5 = 3.5

Finding Mode

As the given data

5, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15

The mode of a set of data is the value in the set that occurs most often.

So, It is bimodal.

Therefore, the mode is 10.

Finding Mean

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

$Mean=Sum\:of\:terms\:\div Number\:of\:terms$

$Sum\:of\:terms\:=\:385$

$Number\:of\:terms\:=\:37$

$Mean\:=\:\frac{385}{37}=10.4$

Determining whether the data is symmetrical or non-symmetrical

The data is non-symmetric, they do not have about the same shape on either side of the middle. In other words, if you fold the histogram in half, it does not look about the same on both sides. Please check the histogram attached below.

Calculating Mean Absolute Deviation

The mean deviation is a measure of dispersion, A measure of by how much the values in the data set are likely to differ from their mean.

As the given data

5, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15

Population size = 37

$Mean=10.4$

Mean Absolute Deviation (MAD): 2.0

Keywords: mode, median, mean, non-symmetrical data, range, Interquartile Range (IQR)

Learn more about mode, median and mean from brainly.com/question/13221365

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3 0

3 years ago