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Which ordered pairs in the form (x, y) are solutions to the equation (x + 7) y = 10? Choose all answers that are correct. A. (−9, −5) B. (−8, 10) C. (−2, 2) D. (3, 5)
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Which ordered pairs in the form (x, y) are solutions to the equation (x + 7) y = 10? Choose all answers that are correct. A. (−9, −5) B. (−8, 10) C. (−2, 2) D. (3, 5)
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Apr 27, 2015
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Which ordered pairs in the form (x, y) are solutions to the equation
(x + 7) y = 10? Choose all answers that are correct. A. (−9, −5) B. (−8, 10) C. (−2, 2) D. (3, 5)
Mathematics
middle-school
Neelesh
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Neelesh
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what you do is to substitute the first number for x and the second for y:
(x+7)y=10
a):
(-9+7)*-5=10
(-2)*-5=10
10=10
yes, it's a solution!
b)
(-8+7)10=10
-1*10=10
-10=10
no, not a solution!
c) (-2+7)2=10
5*2=10
yes, a solution!!
d) (3+7)*5=10
50=10
no, not a solution!
Yogesh Meghnani
answered
May 3, 2015
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Yogesh Meghnani
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