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Anna35 [415]
3 years ago
13

x = Temperature (°C) 1100 1200 1300 1100 1500 1200 1300 y = Porosity (%) 30.8 19.2 6 13.5 11.4 7.7 3.6 (a) Fit the simple linear

regression model using the method of least squares. Find the least squares estimates of the intercept and slope in the simple linear regression model.

Mathematics
1 answer:
arlik [135]3 years ago
7 0

Answer:

  • intercept: 55.6256
  • slope: -0.0341585

Step-by-step explanation:

This sort of problem is best worked by a tool such as a graphing calculator or spreadsheet.

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4y-x<br> 3(2x+y)<br> when x = -3 and y = 3
yan [13]

Step-by-step explanation:

4×3-(-3)=12+3=15

3(2×(-3)+3)=3(-6+3)=(3×(-3)=-9

6 0
3 years ago
The function LaTeX: f\left(x\right)=2\cdot5^xf ( x ) = 2 ⋅ 5 x can be used to represent an exponential growth curve. Which of th
masha68 [24]

Answer:

(2,20)

Step-by-step explanation:

The given function is

f(x) = 2 \cdot \:  {5}^{x}

To see which point is not on this curve, we must substitute the points to see which does not satisfy the equation;

For the first point we substitute x=3 and f(x)=250

250= 2 \cdot \:  {5}^{3}  \:  \\ 250 = 2 \times 125 \\ 250 = 250

This is true.

For the second point (2,20), we put x=2 and y=20 to get:

20= 2 \cdot \:  {5}^{2}  \\ 20 = 2 \times 25 \\ 20 = 50

This is false, hence (2,20) does not lie on this curve.

For (1,10), we have:

10= 2 \cdot \:  {5}^{1}  \\ 10 = 10

This is also true

Finally for (2,50), we have;

50= 2 \cdot \:  {5}^{2}  \\ 50 = 2 \times 25 \\ 50 = 50

This is also true.

4 0
4 years ago
Find the perimeter of a rectangle with a length of 4x + 2 and a width of 2x
snow_tiger [21]

Answer:

12x+4

Step-by-step explanation:

To find the perimeter of any shape you just have to take the sum of all the sides.

In this case you would write:

 4x+2 (side 1) +2x (side 2) +4x+2 (side 3) +2x (side 4)

Now you just have to simplify the expression which would give you:

12x+4 (after collecting like terms)

So the final answer will be 12x+4

4 0
3 years ago
Read 2 more answers
Point P is located at (–3, –2). P is reflected across the x-axis to create P'. What quadrant is P' in?
Eva8 [605]
Look at the axis graph. If both of the coordinates are negative, it would be in quadrant lll. If you go over to the x-axis, you would be in quadrant lV, or 4.

(-2,-3) -> (2,-3)

You change the x-factor's sign. 

I hope this helps!
~kaikers

4 0
3 years ago
A telephone pole breaks and falls as shown. To the nearest foot, what was the original height of the pole? Please i need this as
8090 [49]
I don’t know how old this is but hopefully I’m not too late it’s 17 7+10=17 it is NOT 70 ‍♀️
7 0
3 years ago
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