2 years ago

3)Please help with this question, WILL MARK BRAINLIEST + 10 POINTS!

1 answer:

6 0

$- 9 < u < - 5 \\ 6 < v < 8$
$40 < - 8u < 72 \\ -16< - 2v < - 12 \\ 24 < - 8u - 2v < 60$
i dont understand what the question means

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GarryVolchara [31]

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3 years ago

3/4x + 4/7y = 5/4x -1...solve for y

Zielflug [23.3K]

Answer:

$\frac{3}{4} x + \frac{4}{7} y = \frac{5}{4} x - 1 \\ \frac{4}{7} y = \frac{5}{4} x - 1 - \frac{3}{4} x \\ \\ \frac{4}{7} y = \frac{5x - 4 - 3x}{4} \\ \frac{4}{7} y = \frac{2x - 4}{4} \\ \\ y = \frac{2x - 4}{4} \div \frac{4}{7} \\ y = \frac{2x - 4}{4} \times \frac{7}{4} \\ \\ y = \frac{14x - 28}{16} \\ \\ y = \frac{14x}{16} - \frac{28}{16}$