What is Jaime’s speed if he ran 12 miles in h hours? (He was running with the same speed all that time, believe it or not.) PLS HELP ASAP

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

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

Having a hard time understanding this question (see attachment).