# Alex

Newest questions and responses by Alex
1. ## Chemistry

A particular natural gas consists, in mole percents, of 83.0% CH4, 11.2% C2H6, and 5.8% C3H8. A 385L sample of this gas is measured at 25C and 729mmHg, and is burned in an excess of oxygen. How much heat in kJ is involved in this reaction. I assume you use

2. ## civic education

Write a report on the movie “Sound of Music” and carry out the following task in the report: a) Identify two parenting styles as depicted by the two major roles in the monumental work of art b) Point out the scenes that touch “emotional adjustment to

3. ## Socials

Before the uprising in Haiti, would European have believed that a successful slave revolt on this scale was possible? Why or why not?

4. ## civic education

Write a report on the movie “Sound of Music” and carry out the following task in the report: a) Identify two parenting styles as depicted by the two major roles in the monumental work of art b) Point out the scenes that touch “emotional adjustment to

5. ## english

State the meaning of the following and use each of them in a sentence.1.apologise for/to 2.send into/on.

6. ## geography

Using the given map of LARANTA DISTRICT;  reduce the map to half of the original size and state the new scale  on the new outline, show and name Laranta settlement and the full length of the road.

7. ## math

An airplane flies from a town X on a bearing of N45 0E to another town Y, a distance of 200km. It then. Changes course and flies to another town Z on a bearing of S60 0E. If Z is directly east of X, calculate, correct to 3 significant figures. a. the

8. ## Physics

1. A gate is hinged at A and B. Rope CD is tightened so that the net force in the x is zero. Given that AD=1.5m, AB=2m, BC=2.5m, Force of gravity= 595N a. What is the tension in rope CD b. What is the horizontal force at rope B c. What is the combined

9. ## Physics

1. A guy is doing push ups, the length of the guy is 1.5 m, centre of mass is 0.9 m from the legs. He stops during the push up and holds the position in such a manner that his bent arm forms a 90 degree angle. Mass of the man is 50 kg. Find the force of

10. ## Physics

1. Crane with a weight on the hook of it. Find the upward force of the rear wheels given the centre of gravity a. Length of arm of crane (30m), weight of object on hook (in N), height (3.5m), length of crane (10m) 2 the centre of gravity which was 7m from

11. ## Trig

Jenny is standing 400 feet from an 800 foot tall building. Jenny walks away from the building to a point where the angle of elevation to the top of the building is 22°. What is the angle of elevation to the top of the building from Jenny’s original

12. ## math

two boxes have the same volume. One box has a base that is 2 inches by 2 inces. The other box has a base that is 4 inches by 4 inches. How many tines as tall is the box with the smaller base

13. ## chem

a) The vapour pressure of mercury at 100 ºC is 36.38 Pa. Calculate ∆Gº of vaporization of Hg (ℓ) at 100 º C. b) The vapour pressure of acetone, CH3COCH3 (ℓ) at 25 º C is 232 Torr. If ∆Gf º of CH3COCH3 (ℓ) at 25ºC is −155.7 kJ/mol ,

14. ## Physics

1. 2 rocks sliding on a frictionless surface. Given the speed of both initially (which I can’t remember, this is also a 3D question and I can’t remember what else was given). If the 2 rocks stick together what is the end velocity? A block is pushed

15. ## Physics

1. An 80kg football player is running at the speed of 6.0m/s. A 100kg player is running towards the other player with a speed of 3.0m/s. At what speed are they travelling when they collide? Give the direction. 2. A reckless driver is driving __m/s and hits

16. ## Physics

1. There is a 10 kg textbook resting on a table (1m) above the ground, you want to raise the book 0.8m above that. a. What is the change in potential energy to do so? (I did w= 1.8*98?) b. If you hold the book there (0.8 above the table) for 10m what is

17. ## Math

Bananas cost \$0.98 per kilogram.About how many 170-g bananas can you buy for 1 dollar?

18. ## statistics

Please help with conditional probability problem? Over 50% of all engineers end up in management. An engineering firm needs project managers that understand the technical aspects of the product. A large firm is looking toward future needs. A look at

19. ## Math

1. m-79 4. Translate the following statement into an inequality: Five less than a number is at least nine.

20. ## Math

If a right triangle's hypotenuse is 17 units long, and one of its legs is 15 units long, how long is the other leg?

21. ## Science

PLEASE HELP!Two identical masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other? (1 point) The faster object has the same kinetic energy as the slower object. The

22. ## Health

.PLZ HELP.Public relations is part of business and administrative support. true false

23. ## Social Studies

4. which statement best interprets daniel Webster's position on the nullification crisis as it related to the constitution a. he believed that the constitution said that only the president has the authority to nullify federal laws b. he believed that the

24. ## math

The digits 2, 4, 6, 8 and 0 are used to make five-digit numbers with no digits repeated. What is the probability that a number chosen at random from these numbers has the property that the digits in the thousands place and ten's place are each larger than

25. ## Physics

It takes Earth 365 days to complete one orbit around our sun. Knowing that the magnitude of the average acceleration the Earth experiences over half an orbit is 3.78 x 10^-3 m/s^2, what is the average speed with which it travels? Express your answer in

26. ## Career exploration

Which of the following careers does NOT work with patients or the public?

27. ## science

Which is the blue jay's species within its genus?

28. ## math

During a matinée, a movie theater sold twice as many children tickets as adult tickets. The movie theater sold a total of 402 tickets.

29. ## Math

Got quite a silly question, but wondering if anyone knows the solution. Find the sum of the two missing numbers in the sequence 4, 3, 3, 2, 3, 3, 7, 7, 2, _,_ a)10 b)8 c)11 d)7 e)6 Cant seem to find the pattern here, can anyone see it?

30. ## Probability

We have a red coin, for which P(Heads)=0.4, a green coin, for which P(Heads)=0.5 and a yellow coin for which P(Heads)=0.6. The flips of the same or of different coins are independent. For each of the following situations, determine whether the random

31. ## Math

The hypotenuse (m) and one leg (n) of a right triangle differ by 2. The square of the other side is A)m+2n B)m+n C)2(m-n) D)2(m+n) E)m-2n Work I've done: x^2+(m-2)^2=m^2 x^2+m^2-4m+4=m^2 x^2+4=4m x^2=4m-4 Did i do something wrong?

32. ## Social Studies

15. What is a caucus? (1 point) A. A meeting of the electoral college to vote for president B. A process to determine the numbers of the electoral college C. A small election to gauge a state's support for different candidates D. A small convention to

33. ## physics

The speed of sound in fresh water is 1.5 ✕ 103 m/s. Ultrasound sent from a boat on a fresh water lake strikes a school of fish and is received back at the surface after a total elapsed time of 150 ms. How far are the fish from the boat?

34. ## physics

Determine the change in intensity level (in decibels) when a sound intensity is increased by a factor of 2.0, 20, 200.

35. ## Math

If x^a = y^b = k and x^c = y^d = t, then which of the following is true? a) ac = bd b) ad = bc c)a/d = c/b d) a^c = b^d e) a+c = b+d

36. ## math

3.the total amount Jurene paid for 5 kilos of rice and 2 kilos of fish is less than php 600 a.what mathematical statement represents the total amount Jurene paid?Define the variables used. b.suppose a kilo of rice costs php 35.what could be the greatest

37. ## Chemistry

For C2H5NH3+, write an equation that shows how the cation acts as an acid. Why is my answer wrong? CH2H5NH3^+(aq) + H2O(l) ---> CH2H5NH2(aq) + H3O+(aq)

What is the effective interest rate corresponding to 3.75% compounded continuously? How do I find this? I'm thinking about using the formula A = P(1+r/t)^t ??

S = 631 - 4417/6 + 30919/36 - 216433/216 ... A different geometric sequence has r = -6/7 and the first term is denoted x. Is this series convergent or divergent? If it is convergent, what value of x yields an infinite sum of 1085/13?

"An ambulance driver invests 40,000\$ in a retirement account for 1025 days. The interest rate is 5%, compounded every 2 months. What will his final balance be?" I got to \$2,813,025.57 After plugging it into the formula: A=P(1+r/m)^mt It seems kind of large

How are compound interest and continuous compounding related??? I know they both increase but is that the only similarity?

42. ## Math

Find the greatest possible length of the height of the trapezoid, if the perimeter of the trapezoid is 6

43. ## Algebra

Eleven numbers with the sum 105 are written on the circle. The sum of any two consecutive numbers is not smaller than 18. Find the least possible value of N, so that each number on the circle is not greater than N, for any set of numbers.

44. ## History

1) what significant effect did The Treaty of Paris, signed after the French and Indian War, have on the French (1 point) a) France had to withdraw its empire to Central and South America b) France had to allow the British to claim and settle the Ohio

45. ## Science

Which of the following terms refers to areas of gas on the sun’s surface that are cooler than the gases around them. a.) Prominences b.) sunspots c.) coolspots d.) solar winds **

46. ## science

Which of the following statements describes how a balance obtains a measurement?

47. ## Math

What is a real life example of inverse operation?

48. ## General Chemistry

Question: How do you calculate the molecular weight of something like: A_xB_yC where x=1, and y=0.5? Attempt to the soln: Let Molecular Weight be MW: Is it then: MW OF A_xB_yC [x=1, y=0.5] = (MW of A)x1 + (MW of B)x0.5 + (MW of C)? Am I doing this

49. ## grammar

Hi I will appreciate if someone can help me with my homework: I have to write sentences using USED or DIDN’T USE. The teacher write sentences about Ana and then he said START TO WRITE SENTENCES WITH USE. He wrote: 1. I don’t work long hours any more.

50. ## Math

A rectangular ﬁeld is to be fenced in on four sides with a fifth piece of fencing placed Parallel to one of the shorter sides, so that the ﬁeld is split in two parts. If 1600 m of fencing is available, ﬁnd the largest possible area for this

51. ## Math

Justin is riding in a hot air balloon, directly over Ben, who is standing on the ground. Justin spots Patti on the ground at an angle of depression of 27 degrees. The balloon rises 35m. Now the angle of depression to Patti is 36 degrees. How far is Patti

52. ## Algebra 1

It takes Maria 1 1/2 hours to deliver newspapers every morning. Hal can deliver the papers alone in 1 hour. How fast can they deliver the papers if they work together? How do I set up this problem? Thank you

53. ## Algebra 1

A grocer wants to mix nuts costing \$5 per kg with nuts costing \$8 per kg to make a 10 kg mixture selling for \$6 per kg. How much of each type should be mixed? How do I set up this problem? Thank you.

54. ## vectors

A steel wire 40 m long is suspended between two fixed points 20 m apart. A force of 375 N pulls the wire down at a point 15 m from one end of the wire. State the tension in each part of the wire. Texbook answer: 375N, 0N

55. ## vectors

A man weighing 70 kg lies in a hammock whose ropes make angles of 20º and 25º with the horizontal. What is the tension in each rope? how do you get the following angles for the diagram? 70 corresponds with |T1| (Tension 1) 65 corresponds with |T2|

56. ## Geometry

Area=432 width is 6 feet less than length. what's the length. I haven't done this since the beginning of the year so I could really use the help remembering how.

57. ## calculus

If 'a' and 'b' are unit vectors that make an angle of 60 degrees with each other, calculate l 3a - 5b l and l 8a + 3b l *the 'a' and 'b' have a carat of top of them* How do i answer this without using components?

58. ## vectors

ABCDEF is a regular hexagon with sides of unit length. Find the magnitude and the direction of AB+AC+AD+AE+AF. The textbook answer: 6, 60 degrees to AB A full solution with steps will be greatly appreciated. Thank you :)

59. ## calculus

If 'a' and 'b' are unit vectors that make an angle of 60 degrees with each other, calculate l 3a - 5b l and l 8a + 3b l *the 'a' and 'b' have a carat of top of them* How do i answer this without using components?

60. ## Math

Sulfuric acid is diluted in water to make new mixtures. In one container, 72 ml of a 14% acid solution and, in another container, 64 ml of a 31\$ acid solution. The contents of the containers are mixed together? What's the percentage strength of the acid in

I need to do a history project about a decade after the 1940s in Canada, what decade do you think was the most eventful that i could talk about for 20 minutes in a presentation

62. ## physics

A rescue plane is flying horizontally at a height of 132 m above the ground. The pilot spots a survivor and releases an emergency kit with a parachute. The kit descends at a constant vertical acceleration of -6.89 m/s^2 and the initial plane horizontal

63. ## chemistry

calculate the minimum number of grams of propane, C3H8(g), that must be combusted to provide the energy necessary to convert 6.05 kg of ice at -24.0 ∘C to liquid water at 71.5 ∘C.

64. ## Algebra

Andrew's salary is 1200 a month plus 4% commission on all his sales. What must the amount of his sales be to earn at least 1600 each month. I know the answer has to be around 10,000 but can you show me how to set up the problem to solve it?

65. ## Algebra

This diagram shows a solid metal cylinder. The cylinder hasbase radius 2x and height 9x. The cylinder is melted down and made into a sphere of radius r Find an expression for in terms of x

66. ## math

if you were to kick a rock on mars at a velocity of 56 feet per second from the top of a 30 foot hill and the equation models h=-1.9^2+56t+30 where h is height and t is time. How high will the rock get of the surface?

67. ## math

your friend tosses a ball into the air at an initial velocity of 18 feet per second.The equation h=-8t^2+18t+5 models the height h of the ball t seconds after it was thrown. When did the ball reach its highest point?

68. ## math

Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell five cars; nineteen generally sell six cars; twelve generally sell seven cars; nine generally

69. ## Math

An unknown distribution has a mean of 80 and a standard deviation of 12. A sample size of 95 is drawn randomly from the population. Find the probability that the sum of the 95 values is less than 7,300. (Round your answer to four decimal places.)

70. ## Java

The way event driven programming works in Java is that a handler object fires an event, and a source object processes the event. True or False

71. ## AP Chemistry

What is the reaction that would occur in a galvanic cell between solutions of Al3+ and Pb2, where would oxidation and reduction take place, and what would the cell potentials be?

72. ## Math

When trying to find the probability of drawing a violet marble from a jar containing 9 red, 4 brown, 10 yellow, and 8 violet marbles

73. ## java

Examples of JavaFX GUI classes are: Stage, Scene, Parent and Node. 1)true 2)false

74. ## Java

What does the dot “.” indicate in the following code? myCircle.getRadius() 1)Nothing, it’s a syntax error 2)It indicates that the getRadius() method is a member of the myCircle object 3)It’s just part of the name of the method myCircle.getRadius()

75. ## World History

Read the summary. The Ottoman Empire began as the unification of Seljuk tribes, organized by Osman Gazi (1). The Ottomans were a hybrid of the Turkish, Byzantine, and Muslim cultures (2). They embraced the Eastern Christian Orthodox religion and denounced

76. ## Math

Age| Percent of listeners| Degree Measure| 18-24 11% ??????????????

77. ## Physics

An iceberg has specific weight of 9000 N/m^3 in n ocean, which has a specific weight of 1000 N/m^3. Above the water surface, it was observed that a volume of 2800 m^3 of the iceberg protruded. Determine the volume of the iceberg below the free surface of

78. ## physics

Q: A blue ball is thrown upward with an initial speed of 23 m/s, from a height of 0.5 meters above the ground. 2.8 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 6.6 m/s from a height of 28.9 meters above the

79. ## physics

Q: Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5.7 m/s2 for 3.2 seconds. It then continues at a constant speed for 8.8 seconds, before applying the

80. ## Science

Which of the following is not part of the process of producing electricity from coal? 1. Coal is lifted onto a platform to give it potential energy before burning. 2. Coal must be burned to release heat. 3. Heating water produces steam. 4. Steam runs a

81. ## Science

The energy in food was originally light energy from the Sun. True or false? I think it is true.

82. ## Math

Johnny spent 1/3 of his pocket money on sweets and 2/3 on fruits what fraction of his money did he spend?

How can I turn my c to a b when in the beginning was an A

84. ## Science Physics

Projectile motion problem. The maximum range for a projectile is achieved when the projectile is fired at 45 degrees. This is true if the launch starts and ends at the same altitude. What about if you fire at a target at a lower elevation? Is the optimal

85. ## Math

The U.S. generates an estimated 2 million tons of e-waste each year. At this rate, how many pounds of e-waste does the U.S. generate in one week? Express the answer in scientific notation. Use the relationships below to help you decide: 1 ton = 2,000

86. ## Math

Suppose a ball has a diameter of 8.65 inches. What is the approximate volume of the ball? Round your answer to the nearest cubic inch.

87. ## Intro to Java

The Daily Gazette accepts classified ads in several categories. For most ads, the newspaper charges 10 cents per word for the first 50 words, and 8 cents per word for every word after that. Design a java script for a program that accepts data about an ad:

88. ## Math

Carson spent \$15.99 for 2 books and 3 pens. The books cost \$4.95 each. The sales tax on the total purchase was \$1.22. Carson also used a coupon for \$0.50 off his purchase. If each pen had the same cost, how much did each pen cost?

89. ## Math

2 m + 107.31 = 121.29 How do I find out what m is?

90. ## Math

11.70 + 2*3.90 + d = 21.08 + 2.00 how do I find out d?

91. ## Math

While on vacation, Craig bought a pair of sunglasses for \$15.98, a hat for \$7.99, 5 postcards, and a beach towel. The beach towel cost. \$0.50 more than half the price of the sunglasses. Craig gave the cashier \$40 and got \$3.59 in change. Each postcard cost

92. ## Math

Lia, Phil, and Cam collect a total of \$200.30 for a holiday fundraiser. Phil collects \$12.80 more than Lia. Cam collects 3 times as much as Lia. How much does each person collect?

93. ## Math

Carla bought a digital camera that cost \$91.98. She also bought 2 identical memory cards and a camera case. The camera cost 6 times as much as the case. She paid \$127.35, including sales tax of \$6.06. What was the cost of each memory card?

94. ## Math

Madison and Jim paid \$21.08 for 1 large pizza, 2 salads with the same price. The pizza cost \$11.70, which was 3 times as much as the cost of one salad. They also used a coupon for \$2 off their purchase. What was the cost of one drink?

95. ## Math

What are somewhat websites that I can use for graphs?

96. ## Geography

What effect are new communication technologies having on life in remote communities?

97. ## Music

Which of the following is an example of polyphonic music? A. Gregorian chant B. plainchant C. monody D. fugue

98. ## algebra

Simplify the rational expressions. State any excluded values. Show your work. 8.3x-6/x-2 9.x-2/x^2 +3x-10 pleaasee.