Kim and her brother are saving money each week. Kim has $500 in her account and saves $15 per week. Her brother has $800 in his account and saves $10 per week. How many weeks will it take for both siblings to have the same amount of money in their account?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

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.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?