Ineed to find x using this depiction.

X= 35 degrees

Step-by-step explanation:

Well, we know that 20+x+x=90 because angle ml is a 90 degree angle.

Then, we make an equation; 20+x+x=90

WE solve for x, by combining like terms, so it would now be 20+2x=90

We subtract 2 from both sides, making it 2x=70

Then divide both sides by 2 , making it x=35

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step-by-step explanation:

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