Which of these strategies would eliminate a variable in the system of equations?
( 10x + 4y = -2)
(5x-2y=2)
Choose all answers that apply:
Multiply the top equation by
then add the equations.
Multiply the bottom equation by 2. then subtract the bottom equation from the top equation.

Add the equations.

The value of x is 0.1 and y is -0.75, if the given equations are and .

Step-by-step explanation:

The given is,

                              .................................(1)

                                  ..................................(2)

Step:1

          Equation (2) is multiplied by -2                    ( Eqn(2) × -2 )

                               ................................(3)

Step:2

          Substrate the equation (1)  and (3),

           ( - )

                                                 = 0.1

                                               x = 0.1

Step:3

            Substitute the value of x in equation (1),

          Where, x = 0.1

Step:4

       Check for solution,

                                               2 = 2

Result:

           The value of x is 0.1 and y is -0.75, if the given equations are and .

m∠a is 90°

m∠b is 40°