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morpeh [17]
3 years ago
6

Which ordered pairs in the form (x, y) are solutions to the equation (x + 6)y = 9? Choose all answers that are correct.  A.(−5,

9)  B.(−3, 3)  C.(3, 1)  D.(7, 9)
Mathematics
1 answer:
valentinak56 [21]3 years ago
4 0
<span>So we need to find the solutions to the equation (x+6)y=9 so we can arrange them in pair (x,y). We simply plug in the numbers into the equation. First pair (-5,9), we get (-5+6)9=9 so 1=1 and that is true, so first pair works. Second pair: (-3+6)3=9 we get (3)3=9 and 9=9 so second pair also works. Third pair: (3+6)1=9 we get 9=9, also works. Fourth pair: (7+6)9=9 we get 13*9=9 and 117=9 which is false so the fourth pair can't be a solution for the equation. The correct answers are A, B and C.</span>
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<span>
y = 7 + 3/5
y = 35/5 + 3/5
y = 38/5
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y = 76/10
---
lunch time:
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z = 5*(1/2)
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---
time switching classes:
w = 7/10
---
y - 6x - z - w = 0
6x = y - z - w
x = (y - z - w)/6
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check:
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