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sweet [91]
4 years ago
15

5(x–9)–7(3x+6)=25 Please help me.

Mathematics
1 answer:
Snowcat [4.5K]4 years ago
3 0

Answer:

x=-3 10/16

Step-by-step explanation:

5x-9-21x-42=25 (opening parenthesis)

-16x-33=25

16x+58=0

x=-58/16=-3 10/16

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3 years ago
An art dealer is trying to determine whether the age of a painting plays a significant role in its price at auction. She collect
klasskru [66]

Answer:

-0.20

Step-by-step explanation:

Given the data:

Age at auction (x) ____price sold (y)

391

51

32

84

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104

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76.9

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General formula for a simple linear regression :

y = ab + c

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The regression Coefficient obtained is - 0.20

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