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Basile [38]
3 years ago
13

Question What is the median of the first nine positive integers?

Mathematics
1 answer:
marin [14]3 years ago
3 0

Answer: 5

Step-by-step explanation:

1, 2, 3, 4, 5, 6, 7, 8, 9

5 is the middle number, or median of the numbers.

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5x4 – 7x3 – 5x2 + 5x + 1 = 0
olya-2409 [2.1K]
20 - 21 - 10 + 5x +1= 0
5x = 10
x = 2
5 0
3 years ago
15 is 9 more than j.
Zina [86]

Answer:

j = 6

Step-by-step explanation:

"Is" typically means equals. "More than" means it is added to.

So 15 equals j with 9 added to it.

15 = 9 + j

Now solve for j by subtracting 9 from both sides.

15 - 9 = j

j = 6

7 0
3 years ago
Read 2 more answers
Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) Without doing an
stepladder [879]

Answer:

Step-by-step explanation:

Given are 3 data sets with values as:

(i) 8 9 10 11 12   ... Mean =10

(ii) 7 9 10 11 13    ... Mean =10

(iii) 7 8 10 12 13   ... Mean =10

We see that  data set shows mean deviations as

(i) -2 -1 0 1 2  

(ii) -3 -1 0 1 3    

(iii) -3 -2 0 2 3  

Since variance is the square of std deviation, we find that std deviation is larger when variance is larger.

Variance is the sum of squares of (x-mean).  Whenever x-mean increases variance increases and also std deviation.

Hence we find that without calculations also (i) has least std dev followed by (ii) and then (iii)

(i) (ii) (iii) is the order.

b) Between (i) and (ii) we find that 3 entries are the same and 2 entries differ thus increasing square by 9-4 twice.  But between (ii) and (iii) we find that

increase in square value would be 4-1 twice. Obviously the latter is less.

6 0
3 years ago
HELPPPPPPP !!!!! Select the statements that are true based on the following given information.
almond37 [142]

the anwser is ]123[8D[

7 0
3 years ago
Janeen used 16 pieces of fruit to make her salad. If 1/4 of the fruits were peaches, how many peaches did she use? Make a drawin
RSB [31]
4 pieces of peach
16÷4=4
3 0
3 years ago
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