Lani has learned 21 of 84 songs in her piano playbook what percent of the total number of songs in the playbook has lani learned

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Which number produces a rationale number when multiplied by 1/5

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap