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STALIN [3.7K]
2 years ago
7

Figure out the answer to this question.

Mathematics
2 answers:
pickupchik [31]2 years ago
8 0
  • 5x-3y=9--(1)
  • 4x-2y=12=>2x-y=6--(2)

Doing eq(2)×3

\\ \tt\hookrightarrow 6x-3y=18

Subtracting from eq(1)

\\ \tt\hookrightarrow -x=-9

\\ \tt\hookrightarrow x=9

Put in eq(2)

\\ \tt\hookrightarrow 2(9)-y=6

\\ \tt\hookrightarrow y=12

frutty [35]2 years ago
3 0

Answer:

  • (9, 12)

Step-by-step explanation:

<u>Given system:</u>

  • 5x - 3y = 9
  • 4x - 2y = 12

<u>Solve by elimination, multiply the second equation by - 3/2 and add with the first one:</u>

  • 5x - 3y - 6x + 3y = 9 - 18
  • - x = - 9
  • x = 9

<u>Find y:</u>

  • 5*9 - 3y = 9
  • 45 - 3y = 9
  • 3y = 45 - 9
  • 3y = 36
  • y = 12
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12.) x² - 8x + 17 = 0

Let's solve your equation step-by-step.

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Step 1: Use quadratic formula with a=1, b=-8, c=17.

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13.) x²- 8x + 17 = 0

Let's solve your equation step-by-step.

x² − 8x + 17 = 0

Step 1: Use quadratic formula with a=1, b=-8, c=17.

x=  −b ± √b2−4ac  / 2a

x=  −(−8) ± √(−8)2−4(1)(17)  / 2(1)

x=  8 ± √−4  / 2

There are no real solutions.

Step-by-step explanation:

To solve a quadratic equation by factoring,

Put all terms on one side of the equal sign, leaving zero on the other side.

Factor.

Set each factor equal to zero.

Solve each of these equations.

Check by inserting your answer in the original equation

I hope this helps!

lmk if u have any questions

brainliest is appreciated... :3

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