Ascience teacher collects 18 pints of lake water for a lab she is teaching. the lab requires each student to use 4 fluid ounces of lake water. if 68 students are participating, how many pints of lake water will the teacher have left over?

1 pint (or 16 oz)

Step-by-step explanation:

1. convert the amout of pints into ounces (multiply 18 (pints) times 16 oz in a pint)   18 * 16 = 288 total ounces

2. determin how many ounces are used by students (multiply 68 (students) by 4 oz)     68 * 4 = 272 ounces uses

3. find the difference (subtract 288-272 = 16 oz left over)

16 oz = 1 pint

answer is:

1.75 pounds

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)