3y = -x+11

2x+4y= 14

Solve the system.

x = -1

y = 4

Step-by-step explanation:

3y = -x + 11

2x + 4y = 14

Rearrange equation 1

It becomes

x + 3y = 11

2x + 4y = 14

Multiply equation 1 by 4 and equation 2 by 3

We have

4x + 12y = 44

6x + 12y = 42

Subtract equation 2 from one

We have

-2x = 2

Divide both sides by-2

x = -2/2

x = -1

Now substitute-1 for x in any of the equations to get y .

Using equation 1, we have

-1 + 3y = 11

Add 1 to both sides of the equation

-1 + 1 + 3y = 11 + 1

3y = 12

Divide both sides by 3

3y/3 = 12/3

y = 4

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: