With maths homework !
solve each of the following pairs of simultaneous equations by first changing the subject of one of the equations to give an equal term. then, by addition or subtraction, eliminate the equal term.
2) 3x + y = 9
4 x + 5y = 23
4) 4x + 3y = 37
2x + y = 17
6) 10 x - 3y = 19
x + 2y = 18
i may delete my account that's why i'm giving so many points : d but also i really need this to be done and i have no idea how to solve it.
you

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

He graph of f(x) = |x| is stretched by a factor of 0.3 and translated down 4 units. which statement about the domain and range of each function is correct? the range of the transformed function and the parent function are both all real numbers greater than or equal to 4. the domain of the transformed function is all real numbers and is, therefore, different from that of the parent function. the range of the transformed function is all real numbers greater than or equal to 0 and is, therefore, different from that of the parent function. the domain of the transformed function and the parent function are both all real numbers.