I need to find the value of x given the answer in simplest radical form

How do you write something in scientific notation?

See attachment below and find the equivalent of tan(∠qsr)

Your weight on the moon is relative to your weight on earth. neil armstrong weighed 360 lbs. in his moon gear while on the earth, but on the moon he only weighed 60 lbs. how much would a 150 lb person weigh on the moon?