Dr. Frankenstein needs to make 24 liters of a 20% saline solution. He mixes a 15% saline solution with a 30 % saline solution. How much of each of the solutions will Doc need to make the 20% solution?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15