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Igoryamba
3 years ago
11

Need helpp fastt plss will give brainliest to who is correct plss helpp

Mathematics
1 answer:
ivann1987 [24]3 years ago
7 0
The answer is 221 I did the work
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For this set of data,<br> 89, 88, 84, 87, 89, 84, 84, 83, 85, 89, 84<br> Find the standard deviation
Ilia_Sergeevich [38]

Answer: 2.2962419891482

Step-by-step explanation: First get the mean of the numbers or the average

the mean in this case is 86

then subtract each number by the mean of 86

the numbers then become : 3, 2, -2, 1, 3, -2, -2, -3, -1, 3, -2

then square all the numbers to get : 9, 4, 4, 1, 9, 4, -4, 9, 1, 9, 4

then find the mean of those numbers which is 5.2727272727273

then find the square root of this number to find the standard deviation

2.2962419891482 is the standard deviation

hope this helps mark me brainliest if it helped

6 0
3 years ago
Rectangle A measures 9 inches by 3 inches. Rectangle B is a scaled copy of rectangle A.Select all of the measurements pairs that
umka2103 [35]

Answer:

3 inches by 1 inches or 6 inches by 2 inches. Both answera are correct

Step-by-step explanation:

just an equivalent ratio

hope this helps can I get brainliest

7 0
3 years ago
Please help with math
notka56 [123]

Choice C

(0,-2) is a point

put 0 into each equation and see if it gives you -2

A, c, d will give you -2

(2,0)

Only C gives you 0

5 0
3 years ago
What is .74 repeating as a fraction?
Sedaia [141]
The answer to your question is 74/99:D
8 0
3 years ago
(6.15x+0.24y)÷1.5+5.9x−1.6y Help plz
nadya68 [22]

Answer:

10x − 1.44y

Step-by-step explanation:

(6.15x + 0.24y) ÷ 1.5 + 5.9x − 1.6y =

= 4.1x + 0.16y + 5.9x − 1.6y

= 10x − 1.44y

8 0
3 years ago
Read 2 more answers
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