Show me how 3/6 are equivalent fraction to 1/2

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.