What is the discriminante of the quadratic equation 0=-X2+4X-2?

-4
8
12
24

8

Step-by-step explanation:

-x² + 4x -2 = 0

discrimination for ax² + bx + c =0 is b² - 4ac

4² - 4 x (-1) x (-2) = 8

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

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves