3 years ago

Use substitution to determine the solution of the system of equations.

Mathematics

1 answer:

sineoko [7]3 years ago

4 0

Answer:

Step-by-step explanation:

Work the equations out to find your answer to each, then you see the answer

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Use addition to solve the linear system of equations. Include all of your work in your final answer. $\left\{ \right.$ 3x-y=6

ad-work [718]

Answer:

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

Step-by-step explanation:

We need to solve the linear system of equations.

$3x-y=6 \\y=x-4$

We can write second equation y=x-4 as: $-x+y=-4$

Let:

$3x-y=6--eq(1)\\ -x+y=-4--eq(2)$

Now, Adding equation 1 and 2

$3x-y=6\\ -x+y=-4\\--------\\2x+0y=2\\2x=2\\x=\frac{2}{2}\\x=1$

So, we get x = 1

Now, put value of x in second equation to find value of y:

$y=x-4\\Put\:x=1\\y=1-4\\y=-3$

So, we get y = -3

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

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3 years ago

jack wants to paint his walls. two walls are 12 ft by 8 ft and two walls are 10 ft by 8 ft. what is the area to be painted? if o

Ksivusya [100]

Answer:

352 ft (squared) , he will need 12 paint cans

Step-by-step explanation:

Two 12 by 8ft walls = 192 ft in area, Two 10 by 8ft walls = 160 ft in Area, that equals 352 ft total, 352/30=11.73 repeated, round up to 12

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3 years ago

Susan tossed a die 642 times. Which of the following would be a good estimate of number of times she got the number 3 on the die

JulijaS [17]

3 is 1/6 of the numbers on the cube so you do 642 X 1/6 and get 107 as the answer

7 0

4 years ago

!! PLEASE HELP WILL FOLLOW FOR RIGHT ANSWER !!!!<br> find the volume

Flauer [41]

Answer: Imagine being mad for not getting an answer

Step-by-step explanation:

7 0

3 years ago

What is 2(x+y)? Please help

tekilochka [14]

Answer:

2x+2y

Step-by-step explanation:

Use the distributive property:

2(x+y)=2x+2y

Have a nice day :-)

5 0

2 years ago