Question

Решением каких из уравнений является пара числа( 3,-2) 1) 4х+5y=2 2)3x-2y=5 3)0,2x-0,5y=1,6

Answer 1

Ответ:

думаю 2)3х-2у=5.....

Answer 2

To check which of the equations is satisfied by the pair of numbers (3, -2), simply substitute these values into each equation and see if the equation holds true.

1. 4x + 5y = 2 Substitute x = 3 and y = -2: 4(3) + 5(-2) = 12 - 10 = 2 The equation is satisfied.

2. 3x - 2y = 5 Substitute x = 3 and y = -2: 3(3) - 2(-2) = 9 + 4 = 13 The equation is not satisfied.

3. 0.2x - 0.5y = 1.6 Substitute x = 3 and y = -2: 0.2(3) - 0.5(-2) = 0.6 + 1 = 1.6 The equation is satisfied.

So, the pair of numbers (3, -2) is a solution to equations 1 and 3, but not to equation 2.