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Ket [755]
3 years ago
7

-9x+1=-80 step by step plz

Mathematics
1 answer:
Dvinal [7]3 years ago
3 0

Answer:

Step-by-step explanation:

-9x+1=-80

first subtract 1 from both sides

-9x=-81

we divide by -9

x=9

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28,32,47,16,40,35,38,54 what is the MAD of the data
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Answer:

Mean Absolute Deviation (MAD): 8.5

Step-by-step explanation:

Xmean = (28 + 32 + 47 + 16 + 40 + 35 + 38 + 54)/8  = 290/8

Xmean = 36.25

MAD =

(28 - 36.25) + (32 - 36.25) + (47 - 36.25) + (16 - 36.25) + (40 - 36.25) + (35 - 36.25) + (38 - 36.25) + (54 - 36.25)  divided by 8

a break down of each ( )

(8.25) + (4.25) + (10.75) + (20.25) + (3.75) + (1.25) + (1.75) + (17.75)  divided by 8  =  68

then you take 68/8 = Mean Absolute Deviation  8.5

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3 years ago
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3 years ago
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Answer:

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Step-by-step explanation:

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