3 years ago

Solve the system using elimination. 5x + 4y = 12 3x - 3y = 18

Mathematics

1 answer:

weeeeeb [17]3 years ago

5 0

Point form: (4,-2)
Equation form: x=4, y=-2

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Solve for x. 3/x-1 - 1/x^-1=5/x-1 Please show all work

navik [9.2K]

3/(x-1) - 1/(x^2-1) = 5/(x-1)

Subtract 3/(x-1) from both sides

-1/(x^2-1) = 2/(x-1)

Factor x^2 - 1

-1/[(x-1)(x+1] = 2/(x-1)

Multiply by (x-1)(x+1) on both sides

-1 = 2 (x+1)

-1 = 2x + 2

Subtract 2 from both sides

-3 = 2x

Divide by 2 on both sides

-3/2 = x

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3 years ago

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monitta

Answer:

i am not helping you cheat you should now this

Step-by-step explanation:

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3 years ago

Help me please How many solutions does the equation x -4 = 12 - 2x have? Explain. - ? .

MA_775_DIABLO [31]

Answer: one solution.

Step-by-step explanation:

$\dfrac{2}{3} x-4=12-2x\\\\\dfrac{2}{3} x+2x=12+4\\\\2\dfrac{2}{3} x=16\\\\\dfrac{8}{3} x=16\\\\8x=16 \cdot 3\\\\8x=48\\\\x=\dfrac{48}{8} =6$

This equation has one solution: x = 6.

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3 years ago

Geometry... Please help and I'll mark brainliest if I can. Triangle proofs & reasons

cluponka [151]

Answer:

I think you just figure out what two points make the area? i dont know tho

Step-by-step explanation:

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3 years ago

a garden is 18 feet 3 inches long and 10 feet 8 inches wide. the amount of fencing needed to enclose the garden is Need help and

Anna [14]

Answer:

$\boxed{57ft 10in}$

Step-by-step explanation:

Hey there!

Well if the length is 18 and 3 inches we need to find the sum of both lengths,

18ft 3in + 18ft 3in = 36ft 6in

Width- 10ft 8in + 10ft 8in = 20ft 16 in -> 21ft 4in

l + w = 57ft 10in

Hope this helps :)

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3 years ago