Select all of the ordered pairs (x, y) that are solutions to the linear equation 2x+3y=6. Substitute the x and y values into the equation above to see if the ordered pair is a solution to the linear equation.

1. Not a solution

2. Not a solution

3. Not a solution

4. Not a solution

5. A Solution

6. A solution

Step-by-step explanation: 5 is correct because it is 3 times 2 so 6, but there is no y so the final answer is 6. And the last one is 6 x 2 = 12 and then -2 x 3 = - 6, so 12 - 6 = 6.

Hope this helps

The fifth and sixth answer are solutions.

Step-by-step explanation:

If you substitute the x and y values, essentially multiplying them by the already existing coefficents, you realize that a lot of the equations do not equal 6.

The last two however, do.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225