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zhannawk [14.2K]
2 years ago
11

Find the minimum value of C=x+3y

Mathematics
1 answer:
marshall27 [118]2 years ago
8 0

Answer:

c

Step-by-step explanation:

2x + 3y > 6                                                                                                          (1)

3x – 2y = 9                                                                                                         (2)

x + 5y = 20                                                                                                        (3)

From (1) and (2), we have:

(2x + 3y) - (3x - 2y) > 6 - 9

5y - x > -3                                                                                                          (4)

From (3) and (4), we have:

(x + 5y) - (5y - x) > 20 - (-3)

2x > 23

x > 12,5                                                                                                               (5)

From (3) and (5), we have:

x + 5y = 20 ⇔ 12,5 + 5y > 20

5y > 7,5

y > 1,5

So: C = 4x + 3y > 12,5 × 4 + 1,5 × 3 = 50 + 4,5 = 54,5

Conclusion: C > 54,5

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The value of the a and b will be 6 and 9 feet. Every 2 inches on the scale drawing represents 1.5 feet of the original house.

<h3 /><h3>What is unit conversion?</h3>

The process of converting the unit form is known as the unit conversion. For example, in the SI unit system, mass is in kg. While in CGS, it is represented in grams.

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The given conversion is ;

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\rm 2 \ inch = 1.5 \ feet \\\\ 1 inch = \frac{1.5}{2}  \ feet

For 8, 12 inches, the values in feet is;

\rm 8 \times \frac{1.5}{2} = 6 \  feet

\rm 12 \times \frac{1.5}{2} = 9 \  feet

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8 0
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I need help ASAP!!!!
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Answer:

Step-by-step explanation:

the shape is made up of 2 circles and one box add the 3 areas up

circle area = \pir^{2}

3.14*4^{2} = 50.24

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box, box,  pit now  :P  ooh I was thinking formula one racing,  ( i've been watching that lately)  anyway

box = 8*8 = 64

total = 164.48  is that an option? hmm, yes the bottom two choices.. now the perimeter .  the perimeter is made up of the 2 circles

the circumference of a circle is 2\pir

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2*\pi*4 =25.1327    that's one whole circle , multiplied by 2 , I can see , by math in my head that's about 50.26

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Find the approximate perimeter of the trapezoid? PLSSS HELPPP
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Answer:

49

Step-by-step explanation:

side 1 = |18-3|= 15

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side 4: \sqrt{(18-12)^2 + (4-16)^2} \\ \sqrt{36+144} \\ = \sqrt{180} \\ = 13,4

perimeter = 15 + 9 + 12 + 13,4= 49,4 = 49

5 0
2 years ago
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