2. use the linear combination method to solve the system of equations. explain each step of your solution. 2x - 3y = 13 x + 2y = -4

2x -3y = 13

4x -y = -9

4x -y = -9 x -3 = -12x + 3y = 27

2x -12x = -10x

-3y +3y = 0

13 +27 = 40

-10x = 40

Divide each side by -10

x = 40 / -10

x = -4

Solve for y

2(-4) - 3y = 13

-8 - 3y = 13

Add 8 to both sides

-3y = 21

Divide both sides by -3

y = 21/-3

y = -7

(-4,-7)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers