All categories

3 years ago

Find x and y in 2x+2y=124x_4y=13

Mathematics

2 answers:

Dmitry_Shevchenko [17]3 years ago

8 0

Answer:

x = 4.625, y = 1.375

Step-by-step explanation:

I am assuming that the second equation is 4x - 4y = 13.

2x+2y=12

4x-4y=13

Multiply first equation by -2:-

-4x - 4y = -24 Add this to the second equation to eliminate x:-

-8y = -11

y = 11/8 = 1.375

Plugging this into the first equation:-

2x + 2(1.375) = 12

2x = 9.25

x = 4.625

dlinn [17]3 years ago

6 0

For the first one the answer is y=-1x+6 which means x=-1 and y=6

You might be interested in

A book contains pages from 1-48. A student picks a page at random. What is the probability that the page contains a 3

Nutka1998 [239]

1/48

Since there is only 1 page labeled “3,” the probability of picking page 3 is 1/48.

6 0

3 years ago

Read 2 more answers

1+1+1+1+2-200 pls quick

Ksenya-84 [330]

You add up 1+1+1+1+2 and you get 6. You then subtract 6 by 200 and your answer is -194

5 0

4 years ago

What is 4 x312 but in distributive property

eduard

Answer:

4 times 312 = 1,248 = 312 times 4 = 1,248

Hope this helps, sorry if it didn't.

3 0

3 years ago

Help triangle sum therom and idk what to do

m_a_m_a [10]

Your answer would be x = 12

The triangle sum theorem states that the 3 angles in a triangle equal 180.

Since we have a 90 degree angle shown, we can add it to the other two and set it equal to 180.

30+90+6x-12=180
108+6x=180
6x=72
x=12

5 0

3 years ago

Which of the following is a solution to the equation "y=3x-1"

nalin [4]

we have

$y=3x-1$

we know that

If the point is an equation solution, it must satisfy the equation.

case a) $(4,1)$

Substitute the values of x and y in the equation

$1=3*4-1$

$1=12-1$

$1\neq11$ -------> the point is not solution of the equation

case b) $(2,5)$

Substitute the values of x and y in the equation

$5=3*2-1$

$5=6-1$

$5=5$ -------> the point is solution of the equation

case c) $(4,3)$

Substitute the values of x and y in the equation

$3=3*4-1$

$3=12-1$

$3\neq11$ -------> the point is not solution of the equation

case d) $(0,-3)$

Substitute the values of x and y in the equation

$-3=3*0-1$

$-3\neq-1$ -------> the point is not solution of the equation

therefore

the answer is

The point $(2,5)$ is solution of the equation

4 0

3 years ago

Read 2 more answers