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enyata [817]
3 years ago
11

Solve this system of equations using substitution. Put your answer in ordered pair form, (x,y).

Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0
2x + 5y = 2
-3x - y =-3

-3x - y = -3
y = 3x - 3

substitute y = 3x - 3 into the first equation.

2x + 5y = 2
2x + 5(3x - 3) = 2
2x + 15x - 15 = 2
17x - 15 = 2

solve for x in 17x - 15 = 2

17x - 15 = 2
17x = 2 + 15
17x = 17
x = 1

substitute x = 1 into y = 3x - 3

y = 3x - 3
y = 3(1) - 3
y = 3 - 3
y = 0

(1, 0) << the answer

hope this helped, God bless!
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Step-by-step explanation:

Factor the following:

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Factor the difference of two squares. (2 a)^2 - 5^2 = (2 a - 5) (2 a + 5):

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1 year ago
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IrinaVladis [17]

Answer:

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Step-by-step explanation:

orange: green   : total

2               5            2+5

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If there are 21 picks, we need to divide by 7  to see how many times we need to multiply

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2 years ago
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