What is the solution to the system of equation? -3x-4y-32= -7 2x-6y+2=3 5x-2y+5z=9

Step-by-step explanation:

we are given three equation of variable x, y and z.

-3x-4y-3z= -7  ------------- (1)

2x-6y+z=3     ------------- (2)

5x-2y+5z=9    ------------- (3)

Make the coefficient of z same in both equation.

Multiply equation (2) by 3

-3x - 4y - 3z = -7  

6x - 18y + 3z = 9

Add above equation to eliminate z

3x - 22y = 2 ---------------(4)

Make the coefficient of z same in both equation.

Multiply equation (2) by -5

-10x + 30y - 5z = -15  

5x - 2y + 5z = 9

Add above equation to eliminate z

-5x + 28y = -6 ---------------(5)

Make the coefficient of x same in both equation.

Multiply equation (4) by 5 and equation (5) by 3

15x - 110y = 10

-15x + 84y = -18

Add above equation to eliminate x

        -26y = -8

Substitute y into equation (5) to get x

So,

Substitute x and y into equation (1)

Solution:

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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: