Find the indicated sum

There are 12 boy and13 girls in a class. if the teacher randomly chooses a student’s name out of a hat what is the probability it will be a girl

Write each of the following numerals in base 10. for base twelve, t and e represent the face values ten and eleven, respectively. 114 base 5 89t base 12

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work