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Elodia [21]
3 years ago
12

Which number produces an irrational number when added to 1/2?

Mathematics
1 answer:
docker41 [41]3 years ago
8 0

Well any number you add can be irrational need more information.


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Certain clouds form when temperatures fall below minus−61 degrees°C.What is this temperature in degrees​ Fahrenheit?
Ivanshal [37]

Answer:

Darling it would be: -115.6 F

6 0
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John was gifted with a pack of crayons .rhea borrowed 13 crayons and john was left with 12 crayons. How many crayons did the pac
djverab [1.8K]

Answer:

the answer is 25

Step-by-step explanation:

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7 0
3 years ago
Solve the inequality.<br> s-2 ≤ 7
svet-max [94.6K]

s - 2 ≤ 7

  +2   +2

s ≤ 9

s ≤ 9

6 0
3 years ago
U dont have to do the sustem or varibke part, thx
N76 [4]

Answer:

5. Katelyn worked 11 hours at the grocery store.

6. 5pounds of steak

Step-by-step explanation:

5. let x hrs be the no. of hours Katelyn worked at the grocery store.

amnt of money she earnt = 9x + (15-x)×15

= 9x -15x + 225

= -6x + 225

-6x + 225 = 159

6x = 225-159

6x= 66

x= 11

Katelyn worked 11 hours at the grocery store.

6. Let x be the pounds of steak he purchased.

total paid= 13.50x + (8-x)×3.25

= 13.50x -3.25x +26

= 10.25x +26

10.25x+ 26=77.25

10.25x = 77.25-26

10.25x= 51.25

x=5

try using the same method for qn 7 too

6 0
3 years ago
Find the mean and compare it with the median. Find the standard deviation and compare it with the interquartile range
lidiya [134]

Question:

Find the mean and compare it with the median. Find the standard deviation and compare it with the interquartile range. Calculate s for the data 4, 1, 3, 10, 2.

Answer:

(a)

Mean = 4

Median=3

Mean > Median

(b)

IQR = 2

SD = 3.2

SD> IQR

Step-by-step explanation:

Given:

Data: 4, 1, 3, 10, 2.

Solving (a): The mean and the Median

The mean is calculated as follows:

Mean = \frac{1}{n} \sum x

Where

n = 5 i.e 5 data

So, the expression becomes:

Mean = \frac{1}{5}(4 + 1+3+10+2)

Mean = \frac{1}{5}(20)

Mean = 4

Calculating the Median:

First, arrange the order (ascending order):

Data: 1, 2,3,4,10

Because n is odd

The median is represented as:

Median = (\frac{n+1}{2})th\ item

Median = (\frac{5+1}{2})th\ item\\

Median = (\frac{6}{2})th\ item

Median = 3rd\ item

From the arranged data, the 3rd item is 3.

Hence:

Median=3

<em>By comparison, the mean is greater than the median because </em>4 > 3<em></em>

<em></em>

Solving (b): Standard Deviation and IQR

The standard deviation is calculated as follows:

SD= \sqrt{\frac{\sum (x_i - Mean)^2}{n}

So, we have:

SD= \sqrt{\frac{(4 - 4)^2+(1 - 4)^2+(3 - 4)^2+(10 - 4)^2+(2 - 4)^2}{5}

SD= \sqrt{\frac{(0)^2+(- 3)^2+(- 1)^2+(6)^2+(-2)^2}{5}

SD= \sqrt{\frac{0+9+1+36+4}{5}

SD= \sqrt{\frac{50}{5}

SD= \sqrt{10}

SD = 3.2

Calculating IQR

IQR = Q_3 - Q_1

Data: 1, 2,3,4,10

In (a), we calculate the median as:

Median=3

First, we calculate Q_1

Q_1 = Median\ of\ the\ first\ half.

The first half is:

First\ Half = 1,2,3

So:

Q_1 = 2

First, we calculate Q_3

Q_3 = Median\ of\ the\ second\ half.

Second\ Half = 3,4,10

So:

Q_3 = 4

Recall that:

IQR = Q_3 - Q_1

IQR = 4 - 2

IQR = 2

So, we have:

IQR = 2

SD = 3.2

By comparison, the standard deviation is greater than the IQR because:

3.2 > 2

So,

SD> IQR

8 0
3 years ago
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