# Lala

Popular questions and responses by Lala
1. ## calculus

a boat leaves a dock at 2:00 pm and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 3:00 pm. at what time were the two boats closest together

2. ## Chemistry

A scuba diver’s tank contains 0.29 kg of O2 compressed into a volume of 2.3L. A)calculate the gas pressure inside the tank at 9 Celsius. B) what volume would this oxygen occupy at 26 Celsius and 0.95atm? Answer is a)91atm B) 2.3 x 10^2 L Trying to find

3. ## Chem

a 4.369g sample of metal is placed in a flask. water is added to the flask and the total volume in the flask is read to be 126.4ml. the mass of the water, flask, and metal is 268.5g. if the mass of the flask is 139.3g and the density of water is 1.000g/ml,

4. ## algebra

Write the number 2.4 in the form , using integers, to show that it is a rational number

5. ## Chemistry

Gallium melts just above room temperature and is liquid over a very wide temperature range (30-2204 °C), which means it would be a suitable fluid for a high-temperature barometer. Given its density, daa = 6.0 g/cm, what would be the height of the column

6. ## chem

1) how many molecules are present in 1.5 moles of NaCl? 2) how many atoms of chlorine are in 19.0 grams of MgCl2?

7. ## Calculus

A fence is 1.5m high and is 1m from a wall. A ladder must start from the ground, touch the top of the fence, and rest somewhere on the wall. Calculate the minimun lenght of the ladder. I drew a diagram and i ended up with a right angle triangle. i made the

8. ## PERSONAL FINANCE

a SAVER HAS A \$1000 ON DEPOSIT IN AN ACCOUNT EARNING 3 PERCENT INTEREST. dURING THIS YEAR THE INFLATION RATE WAS 5 PERCENT. AFTER ONE YEAR EHAT IS THE BUYING POWER OF THE AMOUNT IN SAVINGS FOR THAT PERSON?

9. ## Matsci

If the absolute pressure at the bottom of the ocean is 120 kPa, how deep is the water at this point

10. ## physics

A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits another kid 2.1 away square in the back, at a point 0.91 above the ground.

11. ## Penn foster

A healthier substitution for one egg is

12. ## algebra

A motorboat traveling a distance of 225 miles in 5 hours while traveling with the current. Against the current, the same trip took 9 hours. Find the rate of the boat in calm water and the rate of the current. rate of boat___ mph rate of current___ mph

13. ## Economic

a 20 year bond pays on a face value of \$1,000. If similar bonds are currently yielding 9%. What is the Market value of the bond?

14. ## math

20. A scale drawing of a town park has a scale of 5 in : 100 ft. What is the actual length of each foot in the drawing? (1 point)

15. ## Science

A scientist is studying a new chemical he hopes will prevent insects from eating raspberry bushes. he sprays the chemical on a raspberry bush and places it with an unsprayed blackberry bush and some insects in a sealed room. He observes insects eating the

16. ## physics

help please?? A bocce ball with a diameter of 6.00 cm rolls without slipping on a level lawn. It has an initial angular speed of 2.35 rad/s and comes to rest after 2.50 m. Assuming constant deceleration, determine (a) the magnitude of its angular

17. ## chem

Calculate the number of kJ released for the reaction shown below, if you begin with 52 grams of fluorine (F2), and the ΔH = -542 kJ. H2(g) + F2(g) → 2 HF(g)

18. ## English

What does this quote mean? “Stars got tangled in her hair whenever she played in the sky.”

19. ## Financial Mgmt.

Nachman Industries just paid a dividend of D0 = \$1.75. Analysts expect the company's dividend to grow by 30% this year, by 10% in Year 2, and at a constant rate of 5% in Year 3 and thereafter. The required return on this low-risk stock is 9.00%. What is

20. ## management

regarding management and leadership, which statement is most accurate?

21. ## Physics

The coefficient of static friction between the m = 2.95-kg crate and the 35.0° incline is 0.345. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?

22. ## Physics

A lightning bug flies at a velocity of 0.25 m/s due east toward another lightning bug seen off in the distance. A light easterly breeze on the bug at a velocity of 0.25 m/s. What is the resultant velocity of the lightning bug? I drew the .25 east but would

23. ## Physics

A lightning bug flies at a velocity of 0.25 m/s due east toward another lightning bug seen off in the distance. A light easterly breeze on the bug at a velocity of 0.25 m/s. What is the resultant velocity of the lightning bug? I drew the .25 east but would

24. ## world history

why was the congo free state not able to make a profit in the early years?

25. ## Probability

urn1 contains 3 red chips and 1 white chip. urn2 contains 2 red chips and 2 white chips. 1 chip is drawn from each urn and transeferred to the other urn. then a chip is drawn from the first urn. what is the probability that the chip ultimately drawn from

26. ## chemistry

A thimbleful of water at 100 deg C has a higher temp than a swimming pool full of water at 20 deg C, but the pool has more thermal energy than the thimble. Explain why this is possbile?

27. ## calculus

Two roads intersect at an angle of 48º. A car and truck collide at the intersection, and then leave the scene of the accident. The car travels at 100 km h down one road, while the truck goes 80 km h down the other road. Fifteen minutes after the accident,

28. ## Calculus

A certain radioactive material decays exponetially. The percent, P, of the material left after t years is given by P(t)= 100(1.2)^-t a)Determine the half life of the substance

29. ## chemistry

Write the complete balanced molecular, ionic,and net ionic equations for the reaction of nickle II chloride + sodium phosphate. Which product,if any, is a precipitate?

30. ## Romeo and Juliet Help (24 hours and no response)

I posted questions yesterday and it's on the next page. Could you please check them and get back with me thanks.

31. ## call of the wild

A novel differs from a short story because it

32. ## Science

.A uniform metre rule balances horizontally on a knife edge placed at the 58 cm mark when a weight of 20gf is suspended from one end. what is the weight of the rule? *

33. ## physics

a man rides a motorcycle 12km due east and later 5km due north. calculate the: 1.total distance covered 2.displacement covered

34. ## Social studies

How was transportation standardized under the Qin? A roads were the same width B Carriages were the same height C Everyone paid the same road tax**** D Axles of carriages were the same length This is the Unification of China quiz Can someone check my

35. ## science

which units would you use to measure the volume of a small cardboard box

36. ## Physics

the cartesian coordinates of a point on a circle are (1.5m, 2.0m). what are the point;s polar coordinates (r, degree) of this point?

37. ## Math

9:2x=15:12 , so x= ..?

38. ## English

In the Night The Bed Fell, what is the father's reaction to the scene he discovers when he opens the attic door? He is ready to chase a burglar He's worried someone's been hurt He wants to know what's happened He's glad that everyone's all right My answer

39. ## accounting

paying a fixed monthly fee of \$15.00 up yo 240 min then .08 per min if i use less than 240 min still paying 15.00 per mo. based on 100 min 240 min 540 min

40. ## Accounting

variable cost, fixed cost, total costif .10 per min long dist calling based on 100 min, 240 min, and 540 min

41. ## chemistry

Calculate the pH of 0,3g calcium hydroxide dissolved in water to give 500ml solution.

42. ## Physics

An electric heater warms a large 0 degree Celsius block of ice at the rate of 200J/s . calculate the mass of the ice that melts in 10 minutes

43. ## algebra

A car travels down the highway at speeds between 50 miles per hour and 65 miles per hour. If the car travels for 4 hours, write an expression that represents the distance, d, the car has travelled.

44. ## chemistry

how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in 250ml volume.

45. ## statistics

test the claim that less than 30% of the students in class own a car at the 0.10 significance level.

46. ## science

a piece of metal weighs

47. ## Economics

Use supply and demand economic theory and diagram to explain why the prices of houses has changed so much over the last 3 years. I just need topics to use to write about

48. ## physics

a large chunk of ice with mass 15 kg falls from a roof 8 m above the ground . find the kinetic energy of the ice when it reaches the ground

49. ## geometry

how do you find the lenght of the midsegment of a trapezoid when one base equals 21 and the other 17 ?

50. ## English

I'm writing a Precis of a book and it asks to to put the literary period and country I tried to look but I still don't really understand. Thanks

51. ## math

what should you call a man with a clamp

52. ## ap history

when did american economic institutions began to be shaped in a capitalist framework? A.during the colonial period B.during the federalist era C.during the jacksonian era D.during the civil war E.during the late 1890s

53. ## Maths

A box with no top is to be built by taking a 6'' - by - 10'' sheet of cardboard and cutting x - in. squares out of each corner and folding up the sides. Find the value of x that maximizes the volume of the box.

54. ## Calculus

How can i find f''(x) of the function f(x)= 2(cosx)(sec^2x)

55. ## CHEMISTRY

reaction KMnO4+ EDTA(ethylenediaminetetraacetic acid) + MnSO4(s)---> MnCl3 (Violet/Rose solutions) note: Mn is being reduced. a) What is the catalyst in this reaction above? b)What is the role of EDTA in the reaction above

56. ## chem

calculate the number of moles in 0.00655 g of antimony

57. ## Romeo and Juliet (Check answers pplz hurry)

Could you please check these answers from Act 1 (Review it's only 5 questions) 1.What warning does the Prince issue to the Capulets and Montagues? Answer: The Prince warns to the Capulet's and Montague's is if anyone fights they will be put to death. 2.

58. ## math

a driveway is 162 feet long, 12 feet wide, and 6 inches deep. how may cubic yards of concrete will be required to lay the driveway? and pease explain answer

59. ## Math

How are common denominator and common multiple alike and different

60. ## Math

if rain is falling at a rate of 2.01 in./h how much rain would you expect after five hours express your answer rounding correctly to the nearest 10th of an inch

61. ## English

In Crash by Jerry Spinelli What do Crash and Mike have in common?

62. ## Statistics

1. A local community college determines the probability that a student will reenroll for a second year is 0.91. A representative surveys 100 random first year students and asks them if they will be enrolling for the next year. What is the probability that

63. ## Social studies

What was the purpose of the Great Wall? A to separate warring states B to keep out nomads to the north*** C to standardize Chinese roads D to make trade and transportation easier (*** my answer) Please NO answers please just check my answer or send study

64. ## Social studies

Does anyone have the answers to the quiz I need to check my answers Thanks it would help a lot

65. ## edcation

When a person categorizes someone else as belonging to a certain group based on assumptions, this is called

66. ## Maths

Construct a parallelogram AB is 8cm ABC is 120 degrees and BC is 5cm

67. ## math

the radius of a circular cricket field is 60 m. M and N are the ends of a diameter of the field. To walk from M to N, about how much further is it to walk around the boundary than straight across the field?

68. ## math

petrol price rose from x cents/ liter to y cents/liter. Before the rise, it costs \$a t fill my car with petrol. What is the new cost to fill it?

69. ## physicss

The oil drain plug on a car's engine has just been tighten to a torque of 25m*N. a) if a 0.15m long wrench is used to change the oil, what is the minimum force needed to loosen the plug? b) due to limited workspace, it will be necessary to crawl under the

70. ## math

A bag contains some silver balls and golden balls. If you remove one silver ball from the bag, 1/7 of the remaining balls in the bag are silver. If you remove 2 golden balls from the bag, then 1/5 of the remaining balls in the bag are silver. How many

71. ## physics

A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

72. ## physics

A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

73. ## physics

A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

74. ## Physics

the cartesian coordinates of a point on a circle are (1.5m, 2.0m). what are the point;s polar coordinates (r, degree) of this point?

75. ## math

ABC is a sector of a circle with radius R cm and centered at C. The arc DE lies on a circle also centered at C.If the arc DE divides the sector ABC into two regions of equal area. Find the length of the interval CD in terms of R.

76. ## math

ABC is a sector of a circle with radius R and center C. The arc DE lies on a circle also centred at C. If DE divides ABC into two regions of equal area, find the length of CD in terms of R

77. ## math

the plan of a shopping complex is drawn to a scale of 1:400. A supermarket on the plan occupies an area of 0.25m square, calculate its actual area in hectares

78. ## physics

When bunting, a baseball player uses the bat to change both the speed and direction of the baseball. (b) The baseball has a mass of 0.11 kg; its speeds before and after the bunt are 16 m/s and 12 m/s, respectively; and the bunt lasts 0.023 s. What is the

79. ## Physics

A 1500 kg automobile travels at a speed of 105 km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop. (a) What will be the car's stopping distance for dry pavement (µ = 0.85)?

80. ## Physics

Vector A, a wind velocity vector, has a magnitude of 20 miles per hour and is blowing toward the North. A second wind velocity vector, Vector B, has a magnitude of 50 miles per hour and is blowing toward the Southeast. A third wind velocity vector, Vector

81. ## Math

Two similar posters of transformers were displayed in a shop. The area of the larger posters is 117 cm square and the area of the smaller is 52 cm square. If the width of the larger is 18 cm, find width of the smaller.

82. ## Math

Students are making picture frames. They can choose from a brown or black picture frame, and a red, yellow, blue, or green matte. How many different picture frame and matte combinations can the students make?

83. ## Math

During the month of May, Jean has photography class every third day and a photography show every Saturday. On May 5 she has class and a show. During the month of May, how many more times will she have a class and a show on the same day? There are 31 days

84. ## math

if the probability that an event E occurs is 1/p+1, then find the probability that E does not occur in terms of a simple fraction

85. ## math

if the probability that an event E occurs is 1/p+1, then find the probability that E does not occur in terms of a simple fraction

86. ## math

tracy is 7 times as old as heather. if let x be the age of heather now. If in five years time , tracy will be four times as old as heather, write an equation involving x and solve it to find what tracy's age is now.

87. ## Algebra

Solve for x. 4(12)4x=1000 Enter your answer to the nearest hundredth in the box. x ≈ 5.21

88. ## Social Studies

1. Which river helped Rome grow and expand? A. Tigris

89. ## math

if A=5^3*7^3*3^4, find the smallest number A must be multiplied to get a perfect square

90. ## math

from a group of 5 people, how many ways can 3 be selected?

91. ## Chemistry

Calculate the energy needed to ionize an electron of H atoms from its second excited state.

92. ## Social Studies 6 B

1. The Saraswati River was a twin to which other river? A. Ganges. B. Tigris. C. Himalaya. D. Indus. 2. Glacial runoff and ________ provide the water for the large rivers of India. A. underground wells. B. melting snow. C. rain. D. steam. 3. Saraswati

93. ## Finance

You plan on depositing \$10,000 at the end of each year for 30 years into a retirement account that pays 5% interest. How much could you withdraw annually in equal beginning of year amounts starting at the time you make your last deposit and continuing for

94. ## Finance

EMAR expects to receive \$2,000 per year for 10 years and \$3,500 per year for the next 10 years. What is the present value of this 20-year cash flow? Use an 7% discount rate.

95. ## Finance

Suppose you borrowed \$15,000 at a rate of 9% and must repay it in 5 equal installments at the end of each of the next 5 years. What is the outstanding balance of the loan at the end of second year?

96. ## physics

a car travels at 25m/s on a slick road takes 4 second to come to a complete stop. what was the car's average acceleration over 4 second?

97. ## Math

A garden is 3m wThere is a pathway that runs along the perimeter inside the garden.If the area of pathway is half of the area of garden, then the width of the pathway is how many meters?

98. ## Math

Find the quantity of which: 5.4 kg is 45%

99. ## English (Langue Arts)

What does the following quote from “The cask of Amontillado “ reveal about what Montresor wants his servants to do ? "I had told them that I should not return until the morning and has given them explicit orders not to stir from the house. These orders