PLEASE ANSWER ASAP!
Which system of equations has only one solution?
4 x + 2 y = 8.- 4x - 2 y = 3.
-5 x + y = 6. 5x - y = -6.
-3 x + 4 y = 2. 3x - 4y = 0.
2 x + 4 y = 6. 3x - 4y = 9.

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation:

step-by-step explanation:

sry but any answer choices

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.