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Murrr4er [49]
3 years ago
15

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalen

t to y from the first equation is substituted into the second equation. 15x − y = −6 5x − 3y = −13 5(−15x − 6) − 3y = −13 5(15x + 6) − 3y = −13 5x − 3(15x + 6) = −13 5x − 3(−15x − 6) = −13
Mathematics
2 answers:
Hitman42 [59]3 years ago
7 0
15x - y = - 6.....15x + 6 = y...so we sub in 15x + 6 in for y on the other equation

5x - 3y = -13
5x - 3(15x + 6) = -13 <== the new equation
o-na [289]3 years ago
3 0

Answer:

Hence, the resultant equation will be:

5x −3(15x + 6) = −13

Step-by-step explanation:

We are given a system of linear equations such that the first equation is given by:

15x − y = −6------(1)

and the second equation is given by:

5x − 3y = −13----------(2)

If you were to use the substitution method to solve the following system the new equation after the expression equivalent to y from the first equation is substituted into the second equation will be given by:

consider equation (1)

15x − y = −6------(1)

find the expression in terms of x.

i.e. 15x+6=y---(A)

substitute this equation into equation (2) to obtain:

5x − 3(15x + 6) = −13

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Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

When we take an average of something, we have to add up all the data on the somethings and then divide by the number of somethings we have. Ed takes 5 tests, and we have scores for them; we also have his current average. What we don't know for sure are 2 of the 5 test scores, but we have enough to determine what they are.

If one test has a score of x, and the other test is 3 points less than that, the score on that last test is x - 3. Putting all of that together into an average problem:

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