3 years ago

-3x -4y = 20 x - 10y =16 if (x, y) is the solution to the system of equations above what is the value of x?

1 answer:

6 0

Multiply first equation by -5 and 2nd by 2, add them

15x+20y=-100
2x-20y=32 +
17x+0y=-68

17x=-68
divide both sides by 17
x=-4

the x value is -4

You might be interested in

Jonathon worked at McDonald's 20 hours per week and earned $195.Use the equation 20h=195 to find Komathons hourly wage.

Virty [35]

195 divided by 20 = $9.75
Mark brainliest please and thank you :)

5 0

3 years ago

Read 2 more answers

Which of the following is an integer? 95.2 73 54 41 -26

HACTEHA [7]

Answer:

95.2 is not an integer

and other are integers

7 0

3 years ago

Is (1, 2) a solution to the inequality 6x - y> 3?

Lostsunrise [7]

Answer:

Yes.

Step-by-step explanation:

To find the answer we will put it into the equation, since x = 1 and y = 2 we will write it like this, 6(1) - 2 > 3. Since 6 x 1 = 6, we will now subtract 6 from 2 which equals 4. Therefore, the equation is correct because 4 is bigger than 3.

5 0

2 years ago

A pyramid of lcm x 1cm x 1cm cubes is formed. The bottom layer has 1 anrrangement of these cubes. The second layer has a 9 angan

loris [4]

Answer:

1444 uf FC fun with that one is a little bit ago and now I have to do it again in a bit of the day I will be there in a few days

6 0

2 years ago

Write the number with 5 hundreds and 2 thousands

mina [271]

Answer:

500 2000

Step-by-step explanation:

6 0

2 years ago