Choose the correct way to rewrite this fraction as a percent. 19 20​

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Which of the following graphs could represent a quartic function?

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120