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3 years ago

9. Which graph can be used to find the solution to the system of equations?

Mathematics

1 answer:

blsea [12.9K]3 years ago

8 0

I used desmos and plotted the equations in. I would find which graphs cross one another at (-2,-3)

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Nancy gets a weekly allowance or $18. She spends $3 each week on art supplies. She splits the rest of her allowance into equal a

BARSIC [14]

Answer:

5 dollars a week

Step-by-step explanation:

18-3=15

15/3=5

5 0

2 years ago

Simplify problem if possible

sergeinik [125]

$\left(\frac{(x^4y^{-2})^4}{(2x^2)^2\cdot2x^0y^3}\right)^2=\\
\left(\frac{x^{16}y^{-8}}{4x^4\cdot2y^3}\right)^2=\\
\left(\frac{x^{16}y^{-8}}{8x^4y^3}\right)^2=\\
\left(\frac{x^{12}y^{-11}}{8}\right)^2=\\
\frac{x^{24}y^{-22}}{64}$

3 0

3 years ago

X-y+z=-4 3x+2y-z=5 -2x+3y-z=15 How do I solve this?

Lera25 [3.4K]

$1)\ \ \ x-y+z=-4\ \ \ \Rightarrow\ \ \ z=-4-x+y\\\\2)\ \ \ 3x+2y-z=5 \\.\ \ \ \ \Rightarrow\ \ 3x+2y-(-4-x+y)=5 \\.\ \ \ \ \Rightarrow\ \ 3x+2y+4+x-y=5 \\.\ \ \ \ \Rightarrow\ \ 4x+y=1\\\\3)\ \ \ -2x+3y-z=15\\.\ \ \ \ \Rightarrow\ \ -2x+3y-(-4-x+y)=15\\.\ \ \ \ \Rightarrow\ \ -2x+3y+4+x-y=15\\.\ \ \ \ \Rightarrow\ \ -x+2y=11\\--------------------\\$

$z=-4-x+y\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and\\ \left \{ {{4x+y=1\ \ \ \ } \atop {-x+2y=11\ /\cdot4}} \right. \\\\\left \{ {{4x+y=1\ \ \ \ } \atop {-4x+8y=44}} \right. \\-------\\y+8y=1+44\\9y=45\ /:9\\y=5\\\\-x+2y=11\ \ \ \Rightarrow\ \ \ x=2y-11\ \ \ \Rightarrow\ \ \ x=2\cdot5-11=-1\\\\z=-4-x+y=-4-(-1)+5=-4+1+5=2\\\\Ans.\ x=-1\ \ \ and\ \ \ y=5\ \ \ and\ \ \ z=2$

5 0

3 years ago

If there are five different breads, eight meats, five cheeses, and five special sauces, how many different sandwiches are possib

Papessa [141]

Answer:

There are 1000 different sandwiches possible.

Step-by-step explanation:

The number of breads available is, 5.

The number of meats available is, 8.

The number of cheese available is, 5.

The number of special sauces available is, 5.

Assuming that a person is allowed 1 selection of each category.

The possible number of sandwiches that can be made is:

$=5\times8\times5\times5\\=1000$

Thus, there are 1000 different sandwiches possible.

6 0

3 years ago

Solve for y 6x - 2y = 12 A. y= -3x + 6 B. y= 3x - 6 C. -3x + 6 D. -3x - 6

ololo11 [35]

The answer is y=3x-6. (B). First you subtract 6x from both sides. Then you get -2y=12-6x. Now, you divide both sides by -2. This gets you the final answer; y=3x-6 or y=-6+3x.

5 0

3 years ago

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