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kotegsom [21]
3 years ago
12

Please help me do number 3 and number 4

Mathematics
1 answer:
Marina86 [1]3 years ago
3 0
Hello : 
let : A(0,3)    B(4,8)
<span>the slope is :   (YB - YA)/(XB -XA)
</span>(8-3)/(4-0) = 5/4
same method for 4
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Answer:

A. y=-1.2x+59

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Step-by-step explanation:

Part A:

Given:

Newspapers circulated in year 2004, y_{1}=59\textrm{ million}

Newspapers circulated in year 2014, y_{2}=47\textrm{ million}

Let the time x start at the year 2004. So, x_{1}=0

For the year 2014, x_{2}=2014-2004=10

Therefore, linear relationship between newspapers circulated and time passed since 2004 is given as:

y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})\\y-59=\frac{47-59}{10-0}(x-0)\\y-59=-\frac{12}{10}x\\y=-1.2x+59

Therefore, the equation describing the relationship is: y=-1.2x+59

Part B:

For the year 2018, x=2018-2004=14

Plug in 14 for x in the above equation and solve for y. This gives,

y=-1.2(14)+59\\y=-16.8+59\\y=42.2

Therefore, in the year 2018, the newspaper circulation will be 42.2 million.

8 0
2 years ago
Simplify rational equations <br><br><br><br> y=x^2+3x/x<br><br>Show work, please
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Answer:

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Adam likes to do crossword puzzle. He has a book of 200 puzzles. He has finished 95% of the puzzle in the book. How many puzzles
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Answer:

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Step-by-step explanation:

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2 years ago
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