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4 years ago

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Need help with Container A

1 answer:

pav-90 [236]4 years ago

5 0

Ok u neefd to pick b contrener b ok swet heart

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What is the solution of the system? Use elimination.

sweet [91]

Answer:

The solutions to the system of the equations by the elimination method will be:

$x=2,\:z=-1,\:y=2$

Step-by-step explanation:

Given the system of the equations

$2x\:+\:2y\:+z\:=\:7$

$-x-\:y\:+z\:=\:-5$

$x+3y-4z=12$

solving the system of the equations by the elimination method

$\begin{bmatrix}2x+2y+z=7\\ -x-y+z=-5\\ x+3y-4z=12\end{bmatrix}$

$\mathrm{Multiply\:}-x-y+z=-5\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-2x-2y+2z=-10$

$\begin{bmatrix}2x+2y+z=7\\ -2x-2y+2z=-10\\ x+3y-4z=12\end{bmatrix}$

$-2x-2y+2z=-10$

$+$

$\underline{2x+2y+z=7}$

$3z=-3$

$\begin{bmatrix}2x+2y+z=7\\ 3z=-3\\ x+3y-4z=12\end{bmatrix}$

$2x+6y-8z=24$

$-$

$\underline{2x+2y+z=7}$

$4y-9z=17$

$\begin{bmatrix}2x+2y+z=7\\ 3z=-3\\ 4y-9z=17\end{bmatrix}$

Rearranging the equations

$\begin{bmatrix}2x+2y+z=7\\ 4y-9z=17\\ 3z=-3\end{bmatrix}$

solve $3z=-3$ for z:

$z=-1$

$\mathrm{For\:}4y-9z=17\mathrm{\:plug\:in\:}z=-1$

solve $4y-9\left(-1\right)=17$ for y:

$4y-9\left(-1\right)=17$

$4y+9=17$

$4y=8$

$y=2$

$\mathrm{For\:}2x+2y+z=7\mathrm{\:plug\:in\:}z=-1,\:y=2$

solve $2x+2\cdot \:2-1=7$ for x:

$2x+2\cdot \:2-1=7$

$2x+3=7$

$2x=4$

$x=2$

Therefore, the solutions to the system of the equations by the elimination method will be:

$x=2,\:z=-1,\:y=2$

5 0

3 years ago

An equation is shown below 3(2x - 7) = 3

sladkih [1.3K]

3(2x - 7) = 3
6x - 21 = 3
6x = 24
x = 4

6 0

3 years ago

6*5*2 use parantheses and multiplication properties , then find the product

Mrrafil [7]

Answer:

The answer is 60

Step-by-step explanation:

6 times 5 is 30, then you multiply 30 times 2, which is 60

4 0

3 years ago

8÷2^2+1<br> this question i did not not understand

Fudgin [204]

Answer:

3

Step-by-step explanation:

8 ÷ 2² + 1

8 ÷ 4 + 1

2 + 1

3

Have a good day!

4 0

3 years ago

Read 2 more answers

HELP ITS DUE IN A FEW MINUTES!!!!!! I’ll brainlist!!!

egoroff_w [7]

Answer:

8

Step-by-step explanation:

68/8.2=8

8 0

3 years ago