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3 years ago

I need help its math

Mathematics

1 answer:

shtirl [24]3 years ago

4 0

Answer:

$x=47$ °

Step-by-step explanation:

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Hi could some PLEASE help me !!!!

Nataliya [291]

Answer:

3x=78+x-2

Step-by-step explanation:

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3 years ago

Camila had a large collection of basketball cards. She gave half of them to her friend Erin and a sixth of them to her brother.

NARA [144]

Answer:

300

Step-by-step explanation:

7 0

2 years ago

40% of the students in a class with 80 students in total are male students. how many female students does this class have?

V125BC [204]

48. 40% of 80 is 32. 80-32=48. Which means there are 32 boys and 48 girls.

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3 years ago

The managers of 21 supermarkets counted the number of cars in their parking lots on the same day. The results are shown in the l

mixer [17]

The IQR is 42.5

Step-by-step explanation:

Interquartile range is the difference of third and first quartile.

First of all we have to find the median for that purpose the data has to be arranged in ascending order. The data is already in ascending order.

As the number of values are odd

n=21

The median will be: $(\frac{n+1}{2}) th\ term$

Putting n=21

$(\frac{21+1}{2})th\ term\\=(\frac{22}{2})th\ term\\= 11th\ term$

The 11th term is 133

So median = 133

Now the data is divided into two halves

One is: 98, 100, 101, 102, 108, 109, 111,118, 129, 132

2nd is: 135, 135, 145, 146, 146, 156, 170 176, 180, 180

Q1 will be the median of first half and Q3 will be the median of 2nd half.

As now the halves contain even number of values, the medians will be the average of middle two values

For First Half:

98, 100, 101, 102, 108, 109, 111,118, 129, 132

$Q_1 = \frac{108+109}{2}\\Q_1 = \frac{217}{2}\\Q_1 = 108.5$

For Second Half:

135, 135, 145, 146, 146, 156, 170 176, 180, 180

$Q_2 = \frac{146+156}{2}\\Q_2 = \frac{302}{2}\\Q_2 = 151$

Now

Interquartile Range:

$IQR = Q_3-Q_1\\= 151-108.5\\=42.5$

Hence,

The IQR is 42.5

Keywords: Median, IQR

Learn more about median at:

#LearnwithBrianly

7 0

3 years ago

Write an algebraic expression for the phrase. seven less than x

Alex

Answer:

7<x

Step-by-step explanation:

i think this will help

3 0

3 years ago

Read 2 more answers