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Tamiku [17]
3 years ago
5

A farmer owns 30 acres of land on which he wishes to grow corn and barley. The cost per acre for seed corn is $30, and the cost

per acre for barley seed is $20. The farmer can invest a maximum of $600 in seed for the two crops. During the cultivation process, the farmer needs to spray fertilizers and insecticides specific to each crop. This costs $10 per acre for corn and $15 per acre for barley. He can invest only $400 in this process.
Part A: Write the two inequalities that are deciding factors for the number of acres of each crop the farmer will plant, based on the amount of money the farmer will spend on planting and cultivating the two crops.
Part B: Replace the inequality signs in the two inequalities with equal signs. Plot a graph representing the two equations choice of how much of each crop to grow using the Edmentum Graphing Tool and paste it into the box below.
Part C: Should the lines be dotted or solid? Give reasons for both lines. What area should be shaded?
Mathematics
2 answers:
pickupchik [31]3 years ago
7 0

Answer:

prt a. 30c + 20b ≤

prtb. 5,23

prtc. solid,both equations were less than or equal to some value (non-strict inequality), which means that the boundary value (i.e., the line) is also included in the solution set.

The shaded should be below both lines and above both axes.

Step-by-step explanation:

Yuri [45]3 years ago
4 0

Answer:

Step-by-step explanation:

The farmer makes 3.58$

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Sketch the region bounded by the curves, and visually estimate the location of the centroid. y = 2x, y = 0, x = 1 WebAssign Plot
ASHA 777 [7]

Answer:

the graph is in the attachment.

the coordinates of the centroid : (2/3,2/3)

Step-by-step explanation:

  • y=0 represents x-axis ( you can easily mark it on the graph)
  • now draw x=1 line.( It is a line parallel to y axis and passing through the point (1,0) )
  • y=2x is a line which passes through origin and has a slope "2"

by using these sketch the region.

I have uploaded the region bounded in the attachment. You may refer it. The region shaded with grey is the required region.

  • to find centroid:

it can be easily identified that the formed region is a triangle

  • the coordinates of three vertices of the triangle are

(1,2) , (0,0) , (1,0)

( See the graph. the three intersection points of the lines are the three vertices of the triangle)

  • for general FORMULA, let the coordinates of three vertices of a triangle PQR be P(a,b) , Q(c,d) , R(e,f)
  • then the coordinates of the centroid( let say , G) of the triangle is given by

G = (\frac{a+c+e}{3}  , \frac{b+d+f}{3} )

  • therefore , the exact coordinates of the centroid =

(\frac{1+0+1}{3}, \frac{2+0+0}{3}  ) = (\frac{2}{3}, \frac{2}{3} )

this point is marked as G in the graph uploaded.

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3 years ago
Quadrilateral ABCD is inscribed in circle Pas shown. Which statement is necessarily true?
Svetradugi [14.3K]

Given:

Quadrilateral ABCD is inscribed in a circle P.

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Which statement is necessarily true.

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Quadrilateral ABCD is inscribed in a circle P.

Therefore ABCD is a cyclic quadrilateral.

In cyclic quadrilateral, opposite angles form a supplementary angles.

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⇒ m∠B + m∠D = 180° --------- (2)

By (1) and (2),

⇒ m∠A + m∠C = m∠B + m∠D

This statement is necessarily true for the quadrilateral ABCD in circle P.

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egoroff_w [7]

Answer:

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also ANGLES (QPR= STR

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