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goblinko [34]
3 years ago
9

Solve the system of linear equations by substitution. x + 4y = 6 x - y = 1

Mathematics
1 answer:
bulgar [2K]3 years ago
6 0

9514 1404 393

Answer:

  (x, y) = (2, 1)

Step-by-step explanation:

Use the second equation to write an expression for x:

  x = 1 +y

Substitute that into the first equation:

  (1 +y) +4y = 6

  5y = 5 . . . . . . . . subtract 1, collect terms

  y = 1 . . . . . . . divide by 5

  x = 1 +1 = 2 . . . use the expression for x to find x from y

The solution is (x, y) = (2, 1).

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Answer:

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Step-by-step explanation:

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3 years ago
Alex wants to start an IRA that will have $1,250,675 in it when he retires in 30 years. How much should he invest semiannually i
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The formula of the future value of annuity due is
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PMT=1,250,675÷((((1+0.045
÷2)^(2×30)−1)÷(0.045÷2))×(1+0.045÷2))
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Hope it helps!
7 0
3 years ago
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Novay_Z [31]
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Nonamiya [84]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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