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WITCHER [35]
3 years ago
5

rmula1" title="\left \{ {{50x-2y=230} \atop {50x-3y=170} \right." alt="\left \{ {{50x-2y=230} \atop {50x-3y=170} \right." align="absmiddle" class="latex-formula">


combination method
Mathematics
1 answer:
grin007 [14]3 years ago
5 0

Answer:

x = 7, y = 60

Step-by-step explanation:

Given the 2 equations

50x - 2y = 230 → (1)

50x - 3y = 170 → (2)

Subtract (2) from (1) term by term on both sides

y = 60

Substitute y = 60 into either of the 2 equations and evaluate for x

Substituting into (1)

50x - 2(60) = 230

50x - 120 = 230 ( add 120 to both sides )

50x = 350 ( divide both sides by 50 )

x = 7

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6 0
2 years ago
A. 2b + 8 - 5b + 3 = -13 + 8b – 5
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Solution
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3 years ago
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Step-by-step explanation:

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3 0
2 years ago
What is the solution to f (x)=g (x), if f (x)=-x and g (x)=x​
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Step-by-step explanation:

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3 years ago
15 is the same as the product of 3 and a number. Which equation models this sentence?
adelina 88 [10]

Question

15 is the same as the product of 3 and a number. Which equation models this sentence?

15=3x

15=x-3

15=3+x

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Answer:

<h2>15=3x</h2>

Step-by-step explanation:

15 = 3x

x = 15 : 3

x = 5

.........................

check

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the answer is good


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3 years ago
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