anonymous
  • anonymous
(please help asap I really am lost on this can someone be a lifesaver) ---------------------------- 1). Solve the linear system: 2x+3y = 3 x - 6y = -6 a. (-9, 5) b. (-6, 3) c. (-3, 1) d. (0,1) --------------------------- 2). Solve the equation: x^2-100 = 0 a. x = 0, 10 b. x = 10, -10 c. x = 0, -10 d. x = 50, -50
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@AQ99
Z4K4R1Y4
  • Z4K4R1Y4
Second equation: x = 6y – 6 … substitute into first equation: 2(6y – 6) + 3y =3
AQ99
  • AQ99
1. D

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Z4K4R1Y4
  • Z4K4R1Y4
solve for 'y' then slot result in to find' x'.
Z4K4R1Y4
  • Z4K4R1Y4
yh
anonymous
  • anonymous
so the 1st one is D and the 2nd on solve for y then slot the results in to find x?
Z4K4R1Y4
  • Z4K4R1Y4
for the second question you use a method called completing the square.
Z4K4R1Y4
  • Z4K4R1Y4
basically you factorise.
anonymous
  • anonymous
|dw:1432946503976:dw|
anonymous
  • anonymous
|dw:1432946613983:dw|
anonymous
  • anonymous
Answer to 1, (0,1)
anonymous
  • anonymous
|dw:1432946755324:dw|
anonymous
  • anonymous
so answer to 2 is b

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