George wants 42 liters of a mixture of water and 15% lemon juice. He has a mixture of 5% lemon juice and a mixture of 20% lemon juice. How many liters of the 5% and 20% mixtures should he mix to get what he wants? (Round you answer to the nearest tenth if necessary.)

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

Use the squared identities to simplify sin^2x cos^2x