How to do I do solving systems of equations by elimination

1 answer:

7 0

If you have two equations, you will multiply one of them so it cancels out the other one. For Example, 2x-y=16 3x-y=28You will multiply the second equation by -1 which brings us to 2x-y=16 -3x+y=-28you will add both equations together which will leave you with-x=-12x=12Then, you plug that in. 2x12=24. 24-16=8. 3x12=36 36-8=28 And, You're done!

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3x^2-14x=5 Show work too

NemiM [27]

Move all terms to one sides

3x^2 - 14x - 5 = 0

Split the second term in 3x^2 - 14x - 5 into two terms

3x^2 + x - 15x - 5 = 0

Factor out the common terms in the first two terms, then in the last two terms;

x(3x + 1) - 5(3x + 1) = 0

Factor out the common term 3x + 1

(3x + 1)(x - 5) = 0

Solve for x;

x = -1/3, 5

8 0

3 years ago

Which expression is equivalent to <img src="https://tex.z-dn.net/?f=%286%20%5Ctimes%20p%29%20%2B%203" id="TexFormula1" title

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Answer:

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Step-by-step explanation:

(6 × p) + 3

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p = -1/2

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3 years ago

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drek231 [11]

Answer:

x = -4

Step-by-step explanation:

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2 years ago

What would be your mortgage payment if you pay for a $250,000 home by making a 20% down payment and then taking out a 3.74% thir

Nitella [24]

Answer:

$925.097.

Step-by-step explanation:

We will use EMI formula to answer our problem.

$E=P\cdot r\cdot \frac{(1+r)^{n}}{((1+r)^{n}-1)}$ , where,

E is EMI.

P= Principal loan amount.

r= the rate of interest calculated on monthly basis.

We need to figure out our principal loan amount before using this formula. We are told that we have to pay 20% of $250,000 as down payment, therefore our principal loan amount will be 80% of $250,000.

$\text{Principal loan amount}=\frac{80}{100} \times 250,000$