Mayra did not have a date on a friday night so she decided to mix solutions that she obtained from her garage. she has 9 liters of a 4% -saline solution that must be mixed with a 10% solution to get a 6% solution. how many liters of the 10% solution are needed?

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.