PLEASE HELP ASAP start off by restating: Historians know about the past before there were written records by studying artifacts The three main types of artifacts are physical, visual, and oral traditions.

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Multiply. write your answer in simplest form. 3/8 x 5/7

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.