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vekshin1
3 years ago
8

Find the variance of the given data rounded to the nearest hundredth 3,4,5,7,10,12,15

Mathematics
1 answer:
True [87]3 years ago
4 0

Answer:

(3 + 4 + 5 + 7 + 10 + 12 + 15)/7 = 8

(3^2 + 4^2 + 5^2 + 7^2 + 10^2 + 12^2 + 15^2)/7 - 8^2 = 17.14285714


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Y = 5x - 22 y = 4x - 17
Pie
The answer is (5,3). You need to equal both sides out. So 5x-22=4x-17. That will give you x=5. After that you substitute 5 for x in one or both of the equations and get that y=3. Hope this helps!
6 0
3 years ago
Read 2 more answers
Thulani goes to the library every 7 days. He goes to the market every 4 days
emmasim [6.3K]

Thulani goes to both the library and the market for 5 more times during the year.

Step-by-step explanation:

Thulani goes to the library every 7 days. He goes to the market every 4 days.

We have to calculate the Least Common Multiple (LCM) to analyze the next common day on which he will go to both places.

The factors of 7 are:  1 x 7

The factors of 4 are: 2 x 2

Therefore, the LCM would be = 1 x 7 x 2 x 2

LCM = 28

LCM indicates that Thulani will go to both places on every 28th day.

To calculate the number of times (n) he will go to both places on same day. We can use the formula mentioned below:'

n = \frac{Number of days}{frequency}

Here frequency represents the LCM = 28.

The number of days are:

August: 30 (we are excluding 1st August)

September: 30

October: 31

November: 30

December: 31

Total  = 152

By putting the values in formula, we get

n = \frac{152}{28}

n = 5.42

As, the number of times can only be a whole number. Therefore, Thulani goes to both the library and the market for 5 more times during the year.

Learn more:

The following links have more information

brainly.com/question/12419898

brainly.com/question/12764620

Keywords: LCM, same day

#learnwithBrainly

7 0
3 years ago
If anyone knows this then thank you ​
vekshin1

Answer:

B) x=12

Step-by-step explanation:

x+22+4x+2= 5x+24

5x+24=84

5x=60

x=12

6 0
3 years ago
Read 2 more answers
The letter tiles shown below are in a bag. Without looking I am going to draw one tile. What are my chances of getting a g i,o,a
netineya [11]

Total of number= 10

Number of A's=3

3/10 = 0.3

The answer is already in simplest

4 0
3 years ago
Complete the statements to find the product of 4 and 1/5
laila [671]

Answer:

4/5

Step-by-step explanation:

This is because it is a fraction

8 0
2 years ago
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