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4 years ago

1 answer:

hjlf4 years ago

4 0

4x - 3y + 20 = 0....4x - 3y = -21

4x - 3y = -21.....multiply by -2
5x - 6y = -25
----------------
-8x + 6y = 42 (result of multiplying by -2)
5x - 6y = -25
---------------add
-3x = 17
x = -17/3

this system of equations has 1 solution

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Dividing with decimals in the divisor any answer could work

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Answer:

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3 years ago

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Shkiper50 [21]

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

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3 years ago

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IgorLugansk [536]

Answer:

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Step-by-step explanation:

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Alpha, α = 0.05

Sample standard deviation, s = 2.0 hours

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We use two-tailed t test to perform this hypothesis.

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7 0

3 years ago

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