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3 years ago

3x-2y=-6 solve for y and graph

Mathematics

1 answer:

IRINA_888 [86]3 years ago

4 0

Answer:

y=3/2x+3

Step-by-step explanation:

3x-2y=-6

-3x -3x

-2y/-2 =-3x/-2 -6/-2

y=3x/2+3

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for $ax^2+bx+c=0$

$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

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$x^2-7x-6=0$

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$x=\frac{-(-7) \pm \sqrt{(-7)^2-4(1)(-6)}}{2(1)}$

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[tex}16[/tex]

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You invested $29000in two accounts paying 3% and 8% annual interest, respectively. If the total interest earned for the year was

Furkat [3]

Answer:

Amount invested at 3%= $21,000

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Step-by-step explanation:

$29,000 was invested in two accounts

The two accounts have annual interest of 3% and 8%

The total interest that was earned for the year is $1,270

Let y represent the amount invested at 3%

y = 3%

The amount invested at 8% can be represented as

29,000-y

Therefore the value of y can be calculated as follows

3/100 × y + 8/100(29,000-y)= 1270

0.03y + 0.08(29,000-y)= 1270

0.03y + 2320 - 0.08y= 1270

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y = 1050/0.05

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The amount invested at 3% is $21,000

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= 29,000-21,000

= $8000

Hence the amount invested at 3% is $21,000 and the amount invested at 8% is $8000

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