1. Physics

A body of volume hundred centimetre cube is immersed completely in water contained in a jar containing water. the weight of the jar and the water before immersion was 700 grams. After immersion weight of the jar and the water will be

2. maths

In a graduating class with the same number of boys and girls, 1/8 of the girls and 5/6 of the boys are honor students. What part of the class consists of boys who are not honor students

3. Math

Write the ratio of dogs to cats in simplest form. 12 dogs, 16 cats

4. Math

A path is 3 feet wide and is paved with square bricks that are three inches wide. How many bricks wide is the path.

5. Algebra

What is the polar form of 1+sina+icosa

6. Physics

(a) A narrow beam of light containing yellow (580 nm) and green (550 nm) wavelengths goes from polystyrene to air, striking the surface at a 30.0º incident angle. What is the angle between the colors when they emerge? (b) How far would they have to travel

7. science(physics)

A bullet of mass 100g moving with20m/sec .Strikes a wooden plank and peretrates up to 20cm.Calculate the resistance offered by the wooden plank.

8. Math help

Stock in Company XYZ decreased from \$14 per share to \$9 per share. What is the percent decreased in the stock price?

9. Math

In a diagram of an 2 isosceles triangles, where ABC is a big triangle and a ADE, is just inside the top portion of ABC. Isosceles triangle ABC is similar to a isosceles triangle ADE what is the length of DE, which is the base part of a isosceles triangle

10. Math Need Help

The price of a pair of trousers was decreased by 22% at \$30. What was the original price?

11. Chemistry

If 0.896g of a gas occupies a 250mL flask at 20 degree celcius and 760 mmHg of pressure, what is the molar mass of the gas?

12. Physics

A cubical block of steel of side 'a ' and density 'p'floats on mercury of density with a part of it being submerged. The height of the block above the Mercury level is given by

13. F/maths

X, Y and Z are three points on a straight road.A car passes X with a speed of 5m/s and travels from X to Y with a constant acceleration of 2m/s^2. The car then moves with a constant retardation of 3.5m/s^2 from Y to Z and comes to rest at Z. If the total

14. GP

two consecutive terms of a GP are the 2nd ,4th and 7th terms of an A.P respectively.find the common ration of the GP

15. Physics

What is the change in the volume of 1.0 L kerosene, when it is subjected to an extra pressure of 2.0 ×100000 N/m^2 if the density of the kerosene =800kg m^-3 and speed of sound in kerosene is 1300ms^-1

16. math

The selling price of the house from the bank was dropped from k200000.00 to 190000.oo.By what percent did the price drop?

17. Urgent Math

The price of oil decreased from \$54 per barrel to \$50 per barrel. What is the percent decrease in oil prices?

18. Math

A boat is 300m away from the foot of a cliff. The angle of elevation from the boat to the top of the cliff is 16 degrees. a) Determine the height of the cliff to the nearest meter. b) If the boat sails 75 m closer to the cliff, determine , to the nearest

19. Maths

James decided to paint his bedroom. His bedroom walls are 5 metres long and 3 metres high. If 6 litres of paint can cover 10 square metres of the wall, how much paint should James buy to paint all the walls of his bedroom. If paint costs \$12.00 per litre,

20. maths

james decided to paint his bedroom.his bedroom wall are 5 metres long and 3 metres high.if 6 metres of paint can cover 10 square metres of the wall,how much paint should james buy to paint all the walls of his bedroom.

21. world history

What is the most likely explanation for why the Shang had little interaction with non-Chinese cultures?

22. math

Divide 534 into three parts such that the second part will be 32 less than twice the first ,and the third will be 18 more than the first.

23. Math

A boat is 300m away from the foot of a cliff. The angle of elevation from the boat to the top of the cliff is 16 degrees. a) Determine the height of the cliff to the nearest meter. b) If the boat sails 75 m closer to the cliff, determine , to the nearest

24. Geometry

Myles was asked to draw a triangle xyz and then dilate it using the origin aa the center of dilation and a scale factor of 0.75.he thinks adding 0.75 units to the coordinates of the vertices of xyz will help him draw the dilated image. Explain why miles is

25. Maths

A number increases from 30 to 40 and then decreases from 40 to 30. Compare the percent of increase from 30 to 40 and that of the decrease from 40 to 30.

26. Algebra

Plane A is flying at a rate of 560 mph and is traveling 1960 miles from Phoenix to Washington, D.C. Determine how long the flight will take. Which answer choice shows the correct equation and solution for the situation? a)The equation is 1960h=560. The

Rewrite the expression tan(90°−θ)sinθ as one of the six trigonometric functions of acute angle thetaθ. Please show work + answer. I have a few of them to do. Thanks.

28. Chemistry

I need to draw a line angle structure of ibuprofen that shows hydrogen bonding and I am stuck. Can anyone help?

29. pre cal

Given that f(x) is a cubic function with zeros at −5, 2, and 4, find an equation for f(x) given that f(−10)=−4.

30. Math Need Help

The price of an item changed form \$140 to \$100. Then later the price increase again from \$100 to \$140. Which of the two changes was larger in percentage in term and how much percent?

31. SPANISH

Daniel se está afeitando.

32. Math help

At the supermarket, a certain item has increased from 75 cent per pound to 81 cent per bag. What is the percent increase in the cost of the item?

33. chemistry

what volume of a 0.5M solution of sulphuric acid is required to prepare 2 litres of a 0.4M solution of the acid

34. algebra

when the lenght of each side of a square is increased by 7in., its area is increased by 189in.^2. find the lenght of the side of the original square.

35. Math

The school is having a big event in the gym and wants to use their rectangular tables. 6 people can sit together at one rectangular table. If 2 tables are placed together, 10 people can sit together. So the pattern I noticed is 4 people added whenever a

36. physics

a person in a hot air balloon ascending vertically at a constant rate of 12m/s drops a rock over the side when the balloon is 40 m above the ground, what is the velocity of the rock just before it hits the ground, and how long will it take the rock to

37. chemistry

what volumes of 6M hcl and 2M hcl should be mixed to get two litres of 3M hcl

38. Math

Carlos and Max are buying a house. They have \$24000 for a down payment. The house price is \$150000. If the interest rate is 8.85% compounded monthly, determine the size of the monthly payments they must make over the next 25 years to pay off the house.

If the concentration of CN1- is found to be 1.4 × 10-6 mol/L in a saturated solution of AgCN, what is the Ksp of AgCN?

40. Urgent Math

Growing up,you lived in a village. When you left for college, the population was 840. You recently heard that the population has grown by 5%. What is the percent population?

41. Algebra

Write the equation of a line that contains (-8,4) and the midpoint of the segment connecting (-10,5) and (-5,0) in standard form. I'm not sure what I'm doing wrong. I found the midpoint (-7.5, -3.5), found the slope, and put the equation in standard form.

42. maths

danny drove halfway from town p to town q at average speed of 60 km/h. he wants to average 80 km/h for the entire journey. What will his average speed be for the second part of his journey?

43. Physics

A hollow sphere starts from rest and rolls down a hill without sliding. At the bottom of the hill, it has a linear velocity of 5 m/s. What was the height of the hill the sphere rolled down (in meters)?

44. Maths

Ms.Enclair has a fortnightly salary of \$1,200 per fortnight for other expenses. What percent of her salary does she spend in a month? How many percent does she spent on food?

45. Physics

A body of volume hundred centimetre cube is completely immersed in a jar containing water. The weight of the jar and the water before immersion was 700. After immersion weight of jar and water will be

46. Math

A laboratory technician has a 20% and a 40% acid solutions. What amount of each solutions should be used in order to make 300ml of 28% acid solution?

47. chemistry

15mg of sodium chloride is present in 1kg of solution. express the concentration in ppm and ppb.

48. Maths

A clock gains 2 mins in a day and another clock loses 3 mins in a day. Both watch are set to the correct time . When will they both next show the correct time?(in number of days) Please show work.

49. Math

Tobin borrowed \$5000 from the bank in order to buy a new piano. He will pay it off by equal payments at the end of each week for 4 years. The annual interest rate is 3.5%. Determine the size of payments, and the total interest paid. Express your answers

50. Math

Describe two ways to show the expression 5×3/4. My answer is. 15/4. 5×3/4. 5/1×3/4. I don't know how to write expression.

51. Health

set a SMART mental health goal and One social health goal

52. maths

Express the function f(x)= (2x + 1)^3 as a combination of functions g(x) and h(x) and define g(x) and h(x)

53. Math

Casies invested one part of her \$10,000 at 7.5% interest per year and the other part at 8.5% per year as well. Her income from the two investments was \$820. How much did she invest at each rate of interest?

54. algebra

when the lenght of each side of a square is increased by 7in., its area is increased by 189in.^2. find the lenght of the side of the original square.

55. Maths

How many litres of water fills a tank whise internal dimensions are 2.5m by 20m by 1.5m

56. Science

What is physics

57. physics

a sky diver jumps out of a plane that is 3000m above ground with an initial upward speed of 6m/s she free falls for 20s (assume there is no wind at this time)before pulling the cord to activate the parachute she then falls to the ground at a constant

58. Chemistry

You discover a new cell type that contains measurable amounts of silver ions (Ag+) in it. You find that the concentration of Ag+ inside the cell is still 10 times lower than the concentration outside. Calculate the amount of membrane potential that results

59. Maths

The price of an changed from \$120 to\$100, then later the prices decrease again from \$100 to \$80. Which of the change was larger in terms of percent?

60. Math

Which letter on the number line above represents 6?

61. Science

When did the first human exist? And when did they start populating the earth?

62. Physics

Considering a mass-spring system aligned horizontally moving at a velocity v. a) How will the velocity of the mass change if amplitude is doubled. b) How will the velocity of the mass change if the spring constant is quartered? I know the answer to the

63. Math

The sum of two consecutive numbers is S. The square of the larger number minus the square of the smaller number is?

64. maths

The function f is such that f(x)= (2 - x)^2, x belongs to real number. Find g and h as functions of x such that gh(x)=f(x)

65. Organic Chemistry

Is helium considered a noble gas?

66. Algebra 2

What would happen to the sum of a geometric series if the ratio was 1?

67. hard core physics

A car is at motion.It horns an hears the echo of the sound after 6 sec.find the speed of the car.

68. pre cal

Given P(x)=5x^5−9x^3−9x^2+3x+9, P(x)→ ? if x→−∞, P(x)→ ? if x→∞.

69. chemistry

15gm of sodium chloride is present in one kilogram of solution.express the concentratiom in ppm and ppb

70. physical Science

Sodium azide fully decomposes at 300 degrees celcius at a volume of 3,5 cubic decometer,calculate the mass of sodium azide pellets used

71. Math

Ms. Anne works in a supermarket for \$10 per hour.If her pays increased to \$12, then what is her percent increase in pay?

72. Maths

The selling price of a house from the bank was dropped from \$200,000 to \$190,000. By what percent did the price drop?

73. Maths

Solve For X if archtan(x)+archsin(x)=3/4pi

74. Math

Translate into an equation use x to represent an unknown number two thirds of a number is negative 28

75. Maths

Your supervisor says that his wife has put an 18ft x 51ft garden in along the whole back end of their backyard. He says that this has reduced the backyard lawn area by 24%. What are the total dimensions of his backyard? What are the dimensions of of the