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tamaranim1 [39]
3 years ago
12

Solve each system of substitution 2x{ – 4y = –3 3x{ – 6y = 18 help please

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
4 0

Answer:

7y=14. 2x - 4y = 18. (-3x + 2y = 1 ) 3. 2x+6y=18. -qx+6y=3. -7x=21 y=2. 3x + 5y =-5. 3x +0=-5. X=-3. 3x+2y = 1. 10. -10. -3x + 2y. 9+27='s. 끓들 x=-5. (-5,2) y=-4. 3.

Step-by-step explanation:

x=2(y+3). 3 x - 6 y = 18. 3x−6y=18. Add 6y to both sides. Add 6y to both sides. 3x=18+6y. 3x=18+6y

sineoko [7]3 years ago
4 0

Answer:

i dont have a clue maybe someone else can help

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4) Divide by 12 on both sides:
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5) Find the lengths of the sides:

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If f(x) = 7 + 4x and g (x) = StartFraction 1 Over 2 x EndFraction, what is the value of (StartFraction f Over g EndFraction) (5)
Degger [83]

Answer:

\frac{f}{g}(5) = 270 ⇒ Last answer

Step-by-step explanation:

* If f(x) = 7 + 4x

* If g(x) = \frac{1}{2x}

* We want to find \frac{f}{g}(5)

- Lets find at first \frac{f}{g}(x)

∵ f(x) = 7 + 4x

∵ g(x) = \frac{1}{2x}

∴ \frac{f}{g}(x)=\frac{7+4x}{\frac{1}{2x}}

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∵ The numerator is 7 + 4x

∵ The denominator is \frac{1}{2x}

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- Lets reverse the division sign to multiplication sign and reciprocal

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∴ \frac{f}{g}(x) = 2x(7 + 4x)

∴ \frac{f}{g}(x) = 14x + 8x²

- Now substitute x by 5

∴  \frac{f}{g}(5) = 14(5) + 8(5)² = 70 + 200 = 270

∴  \frac{f}{g}(5) = 270

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