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Arada [10]
3 years ago
7

What are x,y, and z if x+y+4z=5, -2x+2z, 3x+y+2z=-1, i am desperate

Mathematics
1 answer:
natulia [17]3 years ago
6 0

Answer:

how I learned it in school was that the variable had to always equal something, so you would have to put on the side or where ever x=(a number) and also you multiply those numbers cause no sign would mean multiply (I'm so sorry if it's not write though, I hope I could help you a little)

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Find the inequality represented by the graph.
iris [78.8K]

Answer:

<h2>x \geqslant  \frac{y + 4}{3}</h2>

Explanation;

Associated line with this equation is:

y=mx+c

when,

X=0

y=-4

so, c=-4

X=1

y=-1

- 1 = m- 4 \\  - m =  - 4 + 1 \\  - m =  - 3 \\ m =3 \\

y = 3x - 4 \\ or \: y + 4 = 3x \\ or \:  \frac{y + 4}{3}  = x

Inequality representated by graph:

x \geqslant  \frac{y + 4}{3}

Hope this helps...

Good luck on your assignment...

7 0
3 years ago
Noah has a summer tree-trimming business. Based on experience, Noah knows that his profit, P, in dollars, can be modelled by = −
crimeas [40]

Solving quadratic equations, it is found that he needs to charge:

1. He needs to charge $40 to break even.

2. He needs to charge $30 for a profit of $600.

<h3>What is a quadratic function?</h3>

A quadratic function is given according to the following rule:

y = ax^2 + bx + c

The solutions are:

  • x_1 = \frac{-b + \sqrt{\Delta}}{2a}
  • x_2 = \frac{-b - \sqrt{\Delta}}{2a}

In which:

\Delta = b^2 - 4ac

The profit equation in this problem is:

P(x) = -3x² + 150x - 1200.

He breaks even when P(x) = 0, hence:

-3x² + 150x - 1200 = 0.

The coefficients are a = -3, b = 150, c = -1200, hence:

  • \Delta = 150^2 - 4(-3)(-1200) = 8100
  • x_1 = \frac{-150 + \sqrt{8100}}{-6}
  • x_2 = \frac{-150 - \sqrt{8100}}{-6} = 40

He needs to charge $40 to break even.

For a profit of $600, we have that P(x) = 600, hence:

-3x² + 150x - 1200 = 600.

-3x² + 150x - 1800 = 0.

The coefficients are a = -3, b = 150, c = -1800, hence:

  • \Delta = 150^2 - 4(-3)(-1800) = 900
  • x_1 = \frac{-150 + \sqrt{900}}{-6}
  • x_2 = \frac{-150 - \sqrt{900}}{-6} = 30

He needs to charge $30 for a profit of $600.

More can be learned about quadratic equations at brainly.com/question/24737967

#SPJ1

6 0
2 years ago
What is the term for the price at which a car manufacturer recommends a vehicle should be sold?
Sergeu [11.5K]
MSRP is the term recomended by manufacturers.

6 0
3 years ago
Read 2 more answers
Does anyone know what the inequality would be?
dsp73

Let x = number of batches.

So for every batch, you need 2 cups of flour, and you have 20 cups of flour. You cannot make a batch if you don't have the sufficient amount. So using our information, our inequality is 2x \leq 20 . However, this can be further simplified.

For this inequality, divide both sides by 2, and <u>your inequality is x\leq 10.</u> <u>In context, you can make up to 10 batches of cookies.</u>

8 0
3 years ago
Can someone please help<br> Me understand
amid [387]

Answer:

S(8, -8)

T(11, -8)

Step-by-step explanation:

(x, y) are your original position.

They want to to translate it by (x+1, y-4). What this means is you add 1 to your x coordinate, and subtract 4 to your y-coordinate.

S(7, -4) --> S(7+1, -4-4) = S(8, -8)

T(10, -4) --> T(10+1, -4-4) = T(11, -8)

You can do the other two on your own because I don't want to give all the answer to your quiz.

8 0
3 years ago
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