Gimme answers plz edgenuity sucks so its not like im really gonna understand anyways

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?