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Phoenix [80]
3 years ago
7

A farmer plants 0.4 fields of wheat. The field is 3.45 acres in size. How many acres are planted with wheat?

Mathematics
2 answers:
shtirl [24]3 years ago
7 0

Answer : 1.38 acres field are planted with wheat.

Step-by-step explanation :

As we are given that a farmer plants 0.4 fields of wheat and the size of field is, 3.45 acres.

Now we have to determine the number of acres field are planted with wheat.

Number of acres field are planted with wheat = Field of wheat × 3.45 acres

Number of acres field are planted with wheat = 0.4 × 3.45 acres

Number of acres field are planted with wheat = 1.38 acres

Thus, 1.38 acres field are planted with wheat.

tresset_1 [31]3 years ago
3 0
Well there should be about 12 acres
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Write the equation of the ellipse with foci at (-2,2) and (4,2) and major axis of length 10 *
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Answer:

The answer to your question is   \frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1          

Step-by-step explanation:

Data

Foci  (-2, 2)  (4, 2)

Major axis = 10

Process

1.- Plot the foci to determine if the ellipse is vertical or horizontal. See the picture below.

From the graph we conclude that it is a horizontal ellipse.

2.- Determine the foci axis (distance between the foci)

                  2c = 6

                    c = 6/2

                    c = 3

3.- Determine a

                  2a = 10

                    a = 10/2

                    a = 5

4.- Determine b using the Pythagorean theorem

                   a² = b² + c²

-Solve for b

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                   b² = 5² - 3²

                   b² = 25 - 9

                   b² = 16

                   b = 4

5.- Find the center (1, 2)  From the graph, it is in the middle of the foci

6.- Find the equation of the ellipse

                      \frac{(x - 1)^{2}}{5^{2}} + \frac{(y - 2)^{2}}{4^{2}} = 1

                       \frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1                

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