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Vika [28.1K]
2 years ago
10

To investigate the relationship between yield of potatoes and level of fertilizer application, a researcher divides a field into

eight plots of equal size and applies differing amounts of fertilizer to each. The yield of potatoes in pounds and the amount of fertilizer in pounds are recorded for each plot. The data are as follows:
Fertilizer (pounds), x Yield (pounds), y
1 25
1.5 31
2 27
2.5 28
3 36
3.5 35
4 32
4.5 34
Find the prediction equation for the regression of yield on fertilizer. Round values to four decimal places.
a. ˆy=24.4524+2.3810x
b. ˆy=27.6073+1.3872x
c. ˆy=22.1023+2.9840x
d. ˆy=25.1523+2.1511x
Mathematics
1 answer:
Ber [7]2 years ago
6 0
So what does it want you to what’s the equation
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3 years ago
Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !
victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

2x^2+18x=20

x^2+9x=\frac{20}{2}

x^2+9x-10=0

ax^2+bx+c=0

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

D=b^2-4ac=(9)^2-4(1)(-10)=121

x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1

x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)

The solution of the given quadratic equation is 1 and (-10).

5 0
2 years ago
Which complex number is represented by the graph
Dmitrij [34]

Answer:

3-4i

Step-by-step explanation:

The x-axis represents x and x is 3. The y-axis represents iy and y is -4 so iy is -4i.

4 0
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The function has an intercept of -2 and y intercept of -2/3. Write an equation.
poizon [28]

Answer:

y= -1/3x - 2/3

Step-by-step explanation:

y- intercept is (0, -2/3) and the x intercept is (0, -2).

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