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stealth61 [152]
3 years ago
14

I need to know the answer

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
4 0
So we know the lines are parallel.
Thus, the equation should look something like this:
y = 5x + b

Now, we have to solve for b.
Plug x=1 and y=2 into the equation to solve for b
2 = 5 + b
Subtract both sides by 5
-3 = b
b = -3

Plug that value into the equation.
y = 5x - 3

That's your answer.
Have an awesome day! :)
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The mean temperature for the first 7 days in January was 3 °C.
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Answer:

<u><em>3.5 °C</em></u>

Step-by-step explanation:

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        3 x 7 = 21

  • Add 21 and 8 together to get the sum of the temperatures in the first 8 days.

        21 + 8 =29

  • Divide 29 by 8 to get the mean temperature for the first eight days.

       29 ÷ 8 = 3.5

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Split the domain into three intervals, and check the sign of f(x) over each interval at some test point in the interval. The sign will tell you when the icicle is dripping (positive) or not (negative).

• [0, 1) : at x = 0, we have f(0) = -7 < 0

• (1, 7) : at x = 2, we have f(2) = 5 > 0

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This tells us that the icicle is not dripping when 0 ≤ x < 1, begins to drip when x = 1, drips for the duration of 1 < x < 7, stops dripping when x = 7, and keeps on not dripping when 7 < x ≤ 10.

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