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8_murik_8 [283]
3 years ago
11

If you have 72% and 89% how do you confirm that the mean is 80.5%?

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
5 0
Add both the number to get 161. Since there are 2 terms 161/2=80.5
den301095 [7]3 years ago
4 0
72+89=161 then 161/2=80.5
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I really really need help​
faltersainse [42]

Answer:

with what? i can help you more than likely if you tell me what you need help with.

Step-by-step explanation:

4 0
3 years ago
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Please help me with #1.
AnnZ [28]

Answer:

<u>810 square meters</u>

Step-by-step explanation:

I did 12 x 15 x 18 and got 3240

then I divided 3240 by 4 because there are 4 sides of it which gave me 810

Hope This helps!

6 0
4 years ago
The following data represent the length of life in years, measured to the nearest tenth, of 30 similar fuel pumps: 2.0 3.0 0.3 3
Alex787 [66]

Answer:

a)

Leaf       Stem

0      |     2,2,2,3,3,4,5,7

1       |      0,2,3,5,5,8

2      |      0,3,5

3      |      0,3

4      |      0,5,7

5      |      0,5,6,9

6      |      0,0,0,5

b)

Digit     Frequency      Relative frequency

0               8                       8/30=0.267

1                6                       6/30=0.2

2               3                        3/30=0.1

3               2                        2/30=0.067

4               3                        3/30=0.1

5               4                        4/30=0.133

6               4                        4/30=0.133

__________________________________

Total        30                         1.00

Step-by-step explanation:

For this case the first step is order the data from the smallest value to the largest and we have this:

0.2, 0.2, 0.2, 0.3,0.3, 0.4, 0.5, 0.7, 1, 1.2, 1.3, 1.5, 1.5, 1.8, 2, 2.3, 2.5, 3, 3.3, 4

4.5, 4.7, 5, 5.5, 5.6, 5.9, 6, 6, 6, 6.5

Part a

We can create the stem leaf plot like this

Leaf       Stem

0      |     2,2,2,3,3,4,5,7

1       |      0,2,3,5,5,8

2      |      0,3,5

3      |      0,3

4      |      0,5,7

5      |      0,5,6,9

6      |      0,0,0,5

Part b

We can create a frequency distribution using the digit to the left of the decimal point like this:

Digit     Frequency      Relative frequency

0               8                       8/30=0.267

1                6                       6/30=0.2

2               3                        3/30=0.1

3               2                        2/30=0.067

4               3                        3/30=0.1

5               4                        4/30=0.133

6               4                        4/30=0.133

__________________________________

Total        30                         1.00

5 0
3 years ago
What is the perimeter of a rectangle that has a length of 40 Ft and a width of 17 ft?
statuscvo [17]

Answer:

i think 114ft

Step-by-step explanation:

5 0
1 year ago
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What is the number -37,860,000 written in scientific notation
miv72 [106K]

Answer:

-3.786 × 10^7

Step-by-step explanation:

Put an decimal behind a number 1-10

but keep the negative sign

so you should get

-3.7860000

Then you count how many numbers are to the right of the decimal which is 7.

That number will become the exponent and then you take away the zeros

You should then have

-3.786 × 10^7 as your answer.

5 0
3 years ago
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