gerald

1. drinking water treatment

What is the saturation concentration of oxygen for this water( atmospheric pressure)
2. math

Write a two-column proof. If FG ⊥ IJ and IG ≅ JG, then FI ≅ FJ
3. Math

Find twice the sum of 18 and 56
4. Math

What is four times the difference between 57 and 29
5. literature

After sneaking in the abode, had he met this influential figure, he would cut his carpus. Who was he?
6. computer science

write a program using pseudocode that give out the students grade after inputting his marks A*>=90 A>=80 B>=70 C>=60 D>=40 E>=30 U<30
7. history

scientific invention that revolutionised food preservation during the 19th century
8. Physics

As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57 m's (128 mph) in just 3.5 s.
9. math

if i deposit inr 1000 monthly for 35 years what will be the amount after 35 years ?
10. English

What literary device does the following sentence use? "a world ruled by judging eyes"
11. algerbra

Find the distance between points P(3,-6) and Q(6,4). Round to the nearest tenth.
12. calculus

At noon, Ship A is 100 km west of ship B. Ship A travels south at 35 km/h. Ship B travels North at 25 km/h. At 4 pm, how fast the distance between them change?
13. calculus

5. Find the equation of the tangent line to the graph of f(a) = -sec(a) at the point (0, -1) 6. Differentiate y = sin(x)tan(x). 7. Find f '(x) for f(x) = sin(x)cot(x). 8. Find the derivative of the function f(x) = cos^2(x) + tan^2(x) 9. Find f '(x) for
14. calculus

1. Which of the following expressions is the definition of the derivative of f(x) = cos(x) at the point (2, cos(2))? 2. Find the derivative of f(x) = |x + 2| at the point (1, 3) 3. Find f '(x) for f(x) = -2x3 + 3x2 - x + 15. 4. Find all values of x on the
15. Precalc 2

At a state fair truck pull, two pickup trucks are attached to the back end of a monster truck as illustrated in the figure. One of the pickups pulls with a force of 1600 pounds and the other pulls with a force of 3200 pounds with an angle of 45° between
16. math

handi divided a board that is 52 inches long into two equal pieces.to find the length of each piece,she used the division expreesion 52 divided by two
17. GLBT Studies

What are some arguments that can be used against a religious racist who argues gay people should have no rights?
18. algebra

The area of a rectangle is 44yds squared, and the length of the rectangle is 3yds less than twice the width. what is the length and width
19. math

Find the equation of the line tangent to f(x)=3x^2-2x-1 at the point where x=2
20. Multivariable Calculus

I was asked to state as a product of speed and unit vector a mass traveling at 1000ft/sec along the vector <1,sqrt(3)>. I know that v/|v| gives me the unit vector, which is (1/2i, sqrt(3)/2j). Do I keep the speed as given?
21. Science

What is the boiling point of ethanol when the atmospheric pressure is 60kPa? I decided to repost this ? under Science instead of Chemistry. Thanks.
22. Chemistry

What is the boiling point of ethanol when the atmospheric pressure is 60kPa?
23. Math formula

If I had a metal circle and the circumference of that measured 6.750 inches long, how long would 38 degrees of that circle be in inches.
24. Algebra II

Simplify (n^2+3)(n^2-5n+6)

what is 3 1/4 plus [3 1/4 plus 5 1/5]
26. Physics

An electron is a subatomic particle (m = 9.11 *10^-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.31 * 10^5 m/s to a final velocity of +2.21 * 10^6 m/s while traveling a distance

I trying to help my son answer this question. 1/4y for y = 16
28. CHEMISTRY

1.Chemistry Question: A 0.1 M solution of acetic acid is titrated with 0.05M solution of NaOH. What is the pH when 60% of the acid has been neutralized? The equilibrium constant (Ka) for acetic acid is 1.8x10^-5 2. Chemistry question: On average, how far
29. MATH

1. Let triangle ABC be a triangle such that angle ACB is 135 degrees. Prove that AB^2 = AC^2 + BC^2 - (Root 2) x AC x BC 2. Simplify: 2/1! - 3/2! + 4/3! - 5/4! + ..... + 2010/2009! - 2011/2010! Where k! is the multiplication of all numbers up to k (e.g. 5!

1.Following is the projected net income stream associated with the use of Zartek technology. (Note: this net income stream does not take into account that Zartek’s owners invested \$2,000 to develop Zartek in Year 0.) Globus Maximus Enterprises would like
31. math

What is the minimum number of identical square tiles required to completly tile a rectangle having dimensions of 3 3/5 units by 4 1/5?
32. health care

which of the following methodologies determine payment before services are received a. fee-for-service payment system or b. capitation system
33. writing

What does voice refer to in a sentence? What does tense refer to?
34. Math -- Calculus

Hours of Daylight as a Function of Latitude Let S (x) be the number of sunlight hours on a cloudless June 21, as a function of latitude, x, measured in degrees. (a) What is S (0)? (b) Let x0 be the latitude of the Arctic Circle (x0 ≈ 66◦
35. chem.

How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 12C?
36. Math

George can spend \$34.80 for his dinner. He wants to tip the waiter 20% of the cost of his meal. How much money does he spend on the tip? Translate the question into an equation. Do not solve.
37. Algebra

How to write -3x + 4y = 11 as a function of x add 3x to each side, then divide by four. y= 3/4 x + 11/4 (Remember this is an "and" statement) or in function notation, y(x)= 3/4 x + 11/4
38. Foreign Languages- Spanish

Hi, How would you say, "We should acknowledge the many achievements that women have brought to the table today." I need to include an idiomatic expression. Thanks so much! Thank you for using the Jiskha Homework Help Forum. "To bring to the table" is an
39. TR Roosevelt Relations

Hi, Can any one tell me the relations between TR Roosevelt and Tadasu Hayashi? Were there any tensions between these too? Thank you for using the Jiskha Homework Help Forum. Here are some sites for you: http://www.portsmouthpeacetreaty.com/biblio3.cfm
40. Populists

Are the populists liberal, reactionary or radical? Are there any websites that can view the different perspectives on populists during the late 1800's? -thanks The term liberal, reactionary, and radical are not very useful for describing views.
41. AP US History

How did the war of Spanish succession affect Spain and her colonies? thx Here are many websites with interesting information about this particular war and its results: http://www.google.com/search?hl=en&q=spanish+war+succession+results ... especially
42. Science-Physics: Space Station

Hello, I am having trouble with this physics problem. Any suggestions with this? Sketch and calculate a spacestation that would meet the requirement of having a 2m tall person experience a 10 % difference in centripetal acceleration between bottom of feet