3 years ago

Solve each system by using substitution. 3x - y = 4 x + 5y = -4

1 answer:

5 0

Answer:

$from \: last \: equation : \\ x = - 4 - 5y - - - (a) \\ substitute \: in \: first \: equation \\ 3( - 4 - 5y) - y = 4 \\ - 12 - 15y - y = 4 \\ - 16y = 16 \\ y = - 1 \\ \\ therefore \: from \: (a) \\ x = - 4 - 5( - 1) \\ x = 1$

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alexdok [17]

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Marco borrowed $150 from his brother.He has paid him back 30% so far.How much money does Marco still owe his brother?

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zhenek [66]

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Solve for x. 5x – 4 ≥ 12 OR 12x + 5 ≤ -4

VARVARA [1.3K]

Answer:

x≥16/5

Step-by-step explanation:

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3 years ago

given that the center of a circle is at point (-3,5) and that the radius of the circle is 6 units, write the the equation of the

Anika [276]

The equation of a cricle is
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