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Mazyrski [523]
2 years ago
13

Solve the following simultaneous linear equations by the Elimination method:

Mathematics
2 answers:
Marysya12 [62]2 years ago
7 0

Answer:

{x,y} = {-4,3}

kifflom [539]2 years ago
3 0

Answer:

x = 4 and y = 3

Step-by-step explanation:

a) 5x - 2y = 14

b) x + 3y = 13

b) x = -3y + 13

a) 5 (-3y + 13) - 2y = 14

-15y + 65 - 2y = 14

-17y = 14 - 65

y = 51/17

y = 3

b) x + 3(3) = 13

x = 13 - 9

x = 4

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Which linear equations does the graph show the solution to? Select all that apply. y = 2x + 13 y = –x – 2 y = 3x – 5 y = negativ
salantis [7]

Answer:

y = 2x + 13

y = –x – 2

Step-by-step explanation:

The options are:

y = 2x + 13

y = -x - 2

y = 3x - 5

y= -(1/2)x + 6

y = -2x - 2

The graph is shown in the figure attached. There, point (-5, 3) is shown. Replacing it into the equations we get:

y = 2(-5) + 13  = 3    (so, it is a solution)

y = -(-5) - 2 = 3     (so, it is a solution)

y = 3(-5) - 5  = -20 ≠ 3   (so, it isn't a solution)

y= -(1/2)(-5) + 6  = 8.5 ≠ 3     (so, it isn't a solution)

y = -2(-5) - 2 = 8 ≠ 3     (so, it isn't a solution)

6 0
3 years ago
Read 2 more answers
Will mark brainliest! IMPORTANT
enot [183]

Answer:

  P(x) = 3.88x -1750

Step-by-step explanation:

Profit is the difference between revenue and cost.

  P(x) = R(x) - C(x)

  P(x) = 4.1x -(0.22x +1750) . . . . . substitute the given expressions

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4 0
3 years ago
What I am really in need of help. If anyone answers this I will award 60 points to anyone!
Vesna [10]
There is usually calculator that will solve it for you look for them just plug the question in and it can show the steps too
7 0
3 years ago
Kelly has a pool in her backyard, and she wants to build a fence around the entire area. Kelly's backyard is 14 meters wide and
bulgar [2K]

Answer:

  • $384.54

Step-by-step explanation:

Dimensions of the backyard is 14 m by 15 m

<u>The length of the fence is the perimeter of the backyard.</u>

  • P = 2(l +w)
  • P = 2(15 + 14) = 2(29) = 58 m

One meter of the fence costs $6.63

<u>Cost of the entire fence is:</u>

  • 58*$6.63 = $384.54

6 0
3 years ago
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In KLM, LM=7 and angle K=45. Find KL. Leave your answer in simplest radical form.
Sphinxa [80]
Answer in simplest radical form would be 7.(:
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3 years ago
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