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aleksandrvk [35]
3 years ago
5

Find the value of x^2+1/x^2 when x-1/x=3​

Mathematics
1 answer:
BaLLatris [955]3 years ago
4 0

Answer:

sorry i couldnt help

Step-by-step explanation:

:(

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Vedmedyk [2.9K]
<span>7x^2 + 7y^2 - 28x + 42y - 35 = 0.
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4 0
3 years ago
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Alexxandr [17]
(-2,0) instead of substitution, you can use elimination which the 3x's will cancel out and you solve the system regularly
8 0
3 years ago
Suppose that in a certain chemical process the reaction time y (hr) is related to the temperature (°F) in the chamber in which t
Svetllana [295]

Answer:

The expected change in reaction time for a 1°F increase in temperature is 4.39 hours.

The expected change in reaction time for a 8°F increase in temperature is 4.32 hours.

Step-by-step explanation:

The simple linear regression line is used to determine the changes in the dependent variables when the independent variable is changed.

The general form of the simple linear regression line is:

y=\alpha +\beta x

The simple linear regression model for the reaction time of a certain chemical process based on the temperature (°F) in the chamber in which the reaction takes place is:

y=4.40-0.01\ x

Here,

<em>y</em> = reaction time (in hours)

<em>x</em> = temperature (°F)

Compute the expected change in reaction time for a 1°F increase in temperature as follows:

y=4.40-0.01\ (1^{\text{o}})

  =4.40-0.01\\=4.39\ \text{hours}

The expected change in reaction time for a 1°F increase in temperature is 4.39 hours.

Compute the expected change in reaction time for a 8°F increase in temperature as follows:

y=4.40-0.01\ (8^{\text{o}})

  =4.40-0.08\\=4.32\ \text{hours}

The expected change in reaction time for a 8°F increase in temperature is 4.32 hours.

7 0
3 years ago
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maw [93]

Answer:

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Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Function k squares the sum of the input, w, and 3.
alisha [4.7K]

9514 1404 393

Answer:

  k(w) = (w +3)²

Step-by-step explanation:

The name of the function is k, and its input is w, so the left side of the equal sign will be ...

  k(w)

This is said to be the square of the sum w+3, so the right side of the equal sign will be ...

  (w +3)²

The function equation in function notation is ...

  k(w) = (w +3)²

7 0
3 years ago
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