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Xelga [282]
2 years ago
5

Not too sure how to approach this problem. Any help would be awesome!

Mathematics
1 answer:
Soloha48 [4]2 years ago
6 0

Answer: x = 6

What you would want to do is subtract 127 and 83 This gives u 44. Then you want to set your equation up. 9x - 10 = 44. Add 10 to both sides and u get 9x = 54. Divide by 9 and x = 6 is your answer

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A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:
Kaylis [27]

Answer:

A.

mean = 724.2

Median = 715

Mode = 768

B.

Range = 85

Standard deviation = 29.30

C.

Interval = [665.6, 782.8]

Step-by-step explanation:

Number of samples n = 25

Summation X= 769 + 691 + 699 +730+711+ 765+ 702 718 +719 +712+ 768 +688 +757+695 768 +735 +709 +758 +708+ 693 +736 700+ 687 +772 +715 = 18105

A.

1. Mean = 18105/25

= 724.2

2. Median is the middle value when arranged from the least value to the highest = 715

3. Mode is the number with the highest frequency = 768 (occured two times)

B.

1. Range = highest value - lowest value

Highest value = 772

Lowest value = 687

772-687 = 85

2. Standard deviation = √(X-barX)²/n-1

= √20604/25-1

=√858.5

= 29.30

Please check attachment for the full calculation of the standard deviation

C.

Interval

[Mean - 2(sd), mean + 2(sd)]

= [724.2-2x29.3, 724.2+2x29.3]

=[665.6, 782.8]

4 0
2 years ago
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gulaghasi [49]

Answer:

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7 0
3 years ago
950.3 divided by 37 were doing partial product divison
charle [14.2K]
I think it’s 25.6 or not
6 0
2 years ago
7/9-2n+1/9 simplify the fraction please help!
koban [17]

Answer: -2*(9n-4)/9

Step-by-step explanation: The -2*(9n-4) is over the 9

7 0
3 years ago
Find all two-digit numbers with the following property: difference of that number and the number with its reversed digits is 36.
kirza4 [7]
10x+y-(10y+x)=36\\
10x+y-10y-x=36\\
9x-9y=36\\
x-y=4\\\\
x,y\in\{1,2,3,4,5,6,7,8,9\}\\
\Downarrow\\
x=5,y=1\\
x=6,y=2\\
x=7,y=3\\
x=8,y=4\\
x=9,y=5




There are 5 such numbers - 51,62,73,84,95
6 0
3 years ago
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