Slove for x

do I do 50*3?
​

65 is x

Step-by-step explanation:

the equation is 2x+50=180 remember line measures 180 degrees that is why the equation also equal 180.

x = 65

Step-by-step explanation:

The line is a 180 degree so 180- 50 = 130

130 / 2 = 65

2 x 65 = 130

X = 65

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