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3 years ago

7

Will give Brainliest. This is a question on Methods for Solving Systems of Equations in Algebra 1.

2 answers:

Rasek [7]3 years ago

6 0

I don’t know what you mean but i’m guessing you’re saying like, ex: 4x+9=3x-3 or something. in that situation we would do something my algebra 1 teacher would call the magic tunnel. step 1: move the 3x over and flip the sign (make it -3x because we’re going across the sign!) step 2: move the +9 over to the other side and flip the sign (make it -9!) your new problem would be 4x-3x=-3-9. step 3: do the math on each side of the equal sign (4x-3x=x), (-3-9=-12) therefore you now have your answer x=-12.

Nat2105 [25]3 years ago

5 0

Answer:

If there are no variables left, then i guess u just have to write the rest down(constant, coefficient, etc...)

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Um help! how do I do this?

valkas [14]

1/2 t-4(2+t)=20
1/2 t-8-4t=20
least common multiple=2
t-16-8t=40
-7t=40+16
-7t=56
t=56/-7=-8

Answer: t=-8

To check
-8/2 - 4(2-8)=-4-4(-6)=-4+24=20

5 0

3 years ago

Read 2 more answers

The prices of commodities X,Y,Z are respectively x, y, z, rupees per unit. Mr. A purchases 4 units of Z and sells 3 units of X a

liubo4ka [24]

Answer:

$(x,y,z)=(1477, 1464, 1437)$

Step-by-step explanation:

Consider the selling of the units positive earning and the purchasing of the units negative earning.

<h3>Case-1:</h3>

Mr. A purchases 4 units of Z and sells 3 units of X and 5 units of Y
Mr.A earns Rs6000

So, the equation would be

$3x + 5y - 4z = 6000$

<h3>Case-2:</h3>

Mr. B purchases 3 units of Y and sells 2 units of X and 1 units of Z
Mr B neither lose nor gain meaning he has made 0₹

hence,

$2x - 3y + z = 0$

<h3>Case-3:</h3>

Mr. C purchases 1 units of X and sells 4 units of Y and 6 units of Z
Mr.C earns 13000₹

therefore,

$- x + 4y + 6z = 13000$

Thus our system of equations is

$\begin{cases}3x + 5y - 4z = 6000\\2x - 3y + z = 0\\ - x + 4y + 6z = 13000\end{cases}$

<u>Solving </u><u>the </u><u>system </u><u>of </u><u>equations</u><u>:</u>

we will consider elimination method to solve the system of equations. To do so ,separate the equation in two parts which yields:

$\begin{cases}3x + 5y - 4z = 6000\\2x - 3y + z = 0\end{cases}\\\begin{cases}2x - 3y + z = 0\\ - x + 4y + 6z = 13000\end{cases}$

Now solve the equation accordingly:

$\implies\begin{cases}11x-7y=6000\\-13x+22y=13000\end{cases}$

Solving the equation for x and y yields:

$\implies\begin{cases}x= \dfrac{223000}{151}\\\\y= \dfrac{221000}{151}\end{cases}$

plug in the value of x and y into 2x - 3y + z = 0 and simplify to get z. hence,

$\implies z= \dfrac{217000}{151}$

Therefore,the prices of commodities X,Y,Z are respectively approximately 1477, 1464, 1437

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2 years ago

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Answer:2/16

Step-by-step explanation:

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Andre45 [30]

Answer:

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Step-by-step explanation:

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4 years ago

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A circle has a circumference of 150 meters. What is the measure of its radius? Round

kupik [55]

Answer:

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3 years ago

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