# Questions Asked onJanuary 16, 2018

1. ## Math

What is the simplified form of the following expression? 2x^2y + 3x^2 + 4y + 3x^2y + 2y

2. ## mathematics

expand [e+1/e]^4 in terms of e. express [e+1/e]^4 + [e-1/e]^4 as the sum of three terms. please help

3. ## math

In a pack of 52 cards, what is the ratio of: 1) hearts to the other suits? 2) aces to the other cards?

4. ## math

Evaluate (2.1 x 10^4) + (5.68 x 10^-2)Express the result in standard form. Can you explain your steps? I don't understand how to solve this with the negative 2

5. ## SS

The Aztecs adapted to their environment mainly by using terracing and irrigation living a nomadic hunter-gather lifestyle trading peacefully with neighbors ---- Settling along the coasts where they could find fish How did the Aztec become so powerful? they

6. ## Physics

Some students want to calculate the work done by friction as an object with unknown mass moves along a straight line on a rough horizontal surface. The students have a force probe, a meterstick, and a stopwatch. Which of the following will allow the

7. ## Physics

Two charges q1= -25 C and q3= 4.0 C are placed 0.012 m apart. A third negative charge, q2 is placed a distance L from q1 as shown. If the net electric force on q2 is 0N what is the value of L?

8. ## Math

Lisa went to the hardware store and bought 12 pieces rope. Each rope was 3 - 4 of a meter long. If the rope cost \$3.50 a meter, how much did she spend? if i could get some help with this thatd be great :)

9. ## math

Three numbers multiplied together equal 2880. A X B X C= 2880 A X B=360 A X C= 160 A= B= C=

10. ## History

Where did the culture of the cattle rancher and cowboy originate? 1. From Texas, after the buffalo was overhunted 2. From the Comanche 3. From the need to move cattle nearer the Mississippi river 4. From Spain

11. ## Math

there's a special at the store \$34 for 7 roses Harry is trying to figure it out if it is a good deal help Harry figure it out the unit price ( round to w decimal places) A. \$0.49 per rose B. \$4.86 per rose C.4.89 roses per dollar D.0.49 roses per dollar

12. ## Math

A group of 8 Office Workers order 12 packs of sushi from The lucal japanes restant for lunch if the packs of sushi are shared equally.What fraction of packs Will each Office Works Will git?

13. ## Math

What is the solution of the following equation? 2 – 8x = -6 Is the ordered pair (-2, 9) a solution of the equation y = x - 7? Solve the following equation. 3(z – 2) – z = 4z – 20 Find the slope of the line that passes through the points (4, 8) and

14. ## Fashion design

Determine if the statement is true or false. The tertiary colors are a mixture of three primary colors. True?

15. ## Math

lucy made 1268 paper cranes. john made twice as many paper cranes as lucy. how many paper cranes must john give to lucy so that they would have the same number of paper cranes

16. ## Microbiology

. If you counted 20 colonies from a 0.01-ml inoculum of a 1:10 dilution of urine, how many organisms per milliliter of specimen would you report? Is this number significant?

17. ## Science 7 A Unit 4

Think about how the amount of energy changes as you move stepwise from producers to primary consumers to tertiary consumers in a food chain. Which shape could you use to model the quantities of energy at all of these types? Circle Square Triangle Line

18. ## math

a gun is fired at a distance of 24.3km away from man. he hears the sound after 27 second. find the speed of sound at which it travels.

19. ## english

This is from "the Importance of Being Earnest" please help thank you. Match the character from the Importance of Being Earnest to his or her quote. a. Algernon b. Cecily c. Gwendolen d. Jack e. Lady Bracknell f. Miss Prism 1. "from the moment I saw you I

20. ## math

how do you find the shape, center, variability, and outliers of a histogram?

21. ## math

If the area of a square is 225cm2 what is the length of one side? i am not sure how to make the 2 squared.

22. ## Social studies

1.These Chinese inventions allowed soldiers to fight on horseback A)block and tackle B)taps and dies C)rack and pinion D)saddle and stirrups*** 2. The Shang made there first capital city A) anahuac B)Beijing C)Anyang*** D)gobi 3.the best-known Shang art

23. ## Math

Show me a picture grid of 1.8 divided by 0.6

24. ## Physics

Find the force necessary to stop a 900 kg jetta traveling at +25 m/s in a time of 5.0 seconds.

25. ## Texas History

why is modern Texas culturally similar to the American South even though it is located in the Southwest? A) People Migrating from the American South settle together and a maintained their traditions B) Texas wish to become part of the Confederate forces so

26. ## math

The area of the rhombus formed by points of intersection of parabolas y=x^2−b and y=−x^2 +b and their vertices is 54. Find b.

27. ## Algebra. Formalizing relations and functions

1.Identify the domain and range of the following relation. {(3,7),(3,8),(3,-2),(3,4),(3,1)} A.Domain:{3} Range:{-2,1,4,7,8} B.Domain:{-2,1,4,7,8} Range:{3} C.Domain:{all real numbers} Range:{all real numbers} D.Domain:O/ Range:O/

28. ## Chemistry - Colligative Properties

The freezing-point depression for a given aqueous solution is 0.32 K. The freezing-point depression constant for water is 1.86 K/m. Calculate the molality of solutes in the solution. The equation for freezing point depression is ΔTf = Kf · m, where ΔTf

29. ## AP Physics question

A roller coaster heads into a circular loop with radius 5m. At what minimum speed must the coaster go at the top of the loop to be sure it stays on the track? I don't really understand what I am supposed to be solving for.

30. ## Physics

A heavy 7kg mass on a 12 N/m spring oscillates with an amplitude of 23 cm. What is the greatest speed the mass reaches in m/s during its oscillation? I figured out the frequency (2.08 Hz). But where in any of my equations for springs and harmonic motion is

31. ## Math

Karen read 20 pages of her book in a half hour if she reads for 3 hours at that same rate about how many pages of her book can she read

32. ## history

why was the cowboy more of a legend than a reality? A. Cowboy culture did not last as long as people truly believe it did. B. Cowboys were typically low-paid young people needed a job. C. Cowboys never really wore the clothes people imagine them wearing.

You are a 70kg astronaut floating at rest in zero gravity holding your laptop. Your hard drive turns on (increasing from 0 to 5400 rpm). Approximate yourself as a uniform sphere of radius 30cm. How fast do you spin in rad/s? The hard drive is an aluminum

34. ## Math

What is the simplified form of the following expression? -(7x – 4y)

35. ## Physics

An truck with a mass of 3500 kg travels with a velocity of 22.0 m/s. Find the momentum.

37. ## Math

A recipe calls for 3 cups of milk for 4 pancakes. To use this recipe to make 16 pancakes, how many cups of milk are needed?

38. ## Physics

Find the angle of elevation of a gun which fire a shell with velocity 120m/s and hit a target on the same level but at 1300m

39. ## Matrix, math

I have matrix A = -1 0 0 -1 B = 0 1 c = 1 0 find n that A^n * matrix B = C find A^2014

40. ## english

what is the super-natural?

42. ## Matrix, math

A = 2 x 2 -1 0 0 -1 find n that A^n * B = C B = 2 x 1 0 1 C = 2 x 1 1 0 answer is 6, but I don't know why find A^2014 the answer is 0 1 -1 0 but I don't know why

43. ## English

what line would rhyme with O why do you sit all alone the the dark?

44. ## English

what line would rhyme with, when you could take a walking in the park?

45. ## Math

The measure of one angle is described as twelve more than four time a number .

46. ## language arts

the trouble with television Robert MacNeil voices a strong opinion about television in a paragraph explain his opinion then tell whether you agree or disagree with him support your view with at least two pieces of evidence from MacNeil's essay or from your

47. ## History

“The liberty of the press is essential to the security of freedom in a state: it ought not, to be restrained in his common wealth.” - The above quote runs counter to a set of legislative acts during the Adams admiration that were inspired by _. • the

48. ## math

Noah wants to display his 72 collectors flags.he is going to put 6 flags in each row.how many rows of flags will he have in his display?

49. ## math

Greg is buying a bike on a payment plan. the equation y=20x+600 models the amount he has left to pay, where x is the number of weeks and y is the amount of money owed in dollars. Lin is also buying a bike on a payment plan. The bike costs \$500. She will

50. ## Math

1. Solve each absolute value equation or inequality and choose the correct answer from the choices provided. |x| + 5 = 18 (1 point) 5 or –5 13 or –13 18 or –18 23 or –23 2. |x + 3| < 5 (1 point) –8 < x < 2 –2 < x < 8 3 < x < 5 –3 < x < 5 3.

51. ## Maths

Alice spends 1/3 of her allowance on snacks and 1/2 on school supplies. What fraction of her money did she save?

52. ## mα†h

sσlvє thє prσpσrtíσn g/56=2/8 α.g=14 в.g=16 c.g=13 d.g=50

53. ## Early Childhood Education

What kinds of stress do families who live in poverty encounter

54. ## Math

Greg is buying a bike on a payment plan. the equation y=20x+600 models the amount he has left to pay, where x is the number of weeks and y is the amount of money owed in dollars. Lin is also buying a bike on a payment plan. The bike costs \$500. She will

55. ## Geography

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

56. ## Chemistry

True or false question The pH of 0.1mol/L acetic acid is 1. So the amswer is False, the pH is greater than 1. How is pH-log(0.1)=1 wrong? I researched and found this solution but I don't know why I cant use pH=-log ([H+]) Ka=1.8×10^-5 1.8=x^2÷x I get

57. ## Teacher compliments

My teacher given me an extension on this thing. Can you give me suggestions what to say in the thank you letter (like complients or fun phrases for a teacher)?

You use a scale of 1inch = 280 feet to build a model of the Great Pyramid of Giza. The width of the base of the pyramid is 756 feet. What is the width of your model? a. 27 in. b. 3.4 in. c. 3 in. d. 2.7 in.

59. ## American history

How does the Bill of Rights reflect the idea of limited government?

60. ## Science

What is the puckered opening between the legs of a frog called?

61. ## American History

Based on the information on the map, what can you infer about industry in the United States? 1. Manufacturing was a key part of the economy in the Northeast. 2. Agriculture was the major industry in the South. 3. Mills in the Northeast had to be close to

62. ## Probability

Richard is playing a game where he draws one playing card each out of two stacks of four cards. Is Richard more likely to draw two cards with a product that is an even number or two cards with a product that is a single digit? A. Richard is equally likely

63. ## Maths

A rectangular box has a height 1.5 m ,breadth=80 cm and thickness fifty cm .find its volume?

64. ## Chemistry II

When a specific amount of propanol (C3H8O) is added to 110.0 g of pure water at 60°C, the vapor pressure of water over the solution is lowered by 1.596 kPa. Given the vapor pressure of water at 60°C is 19.932 kPa, what is the mass of propanol added?

65. ## Chemistry

The boiling point of a solution increases directly as a function of the number of moles of solute present in a given mass of solution. This relationship is expressed mathematically by the following equation. ΔTb = Kb·m ΔTb is the boiling-point elevation

66. ## Chemistry

What is the boiling point (in °C) of a solution of 9.22 g of I2 in 66.5 g of toluene, assuming the I2 is nonvolatile? (For toluene, Tb = 110.63°C and Kb = 3.40°C·kg/mol.)

67. ## Social Studies

How were the lives of children in the middle of the nineteenth century different from previous generations?

68. ## LESC LOWER EAST SIDE MANHATTAN

A FLAGPOLE IS 70M HIGH IF IT MAKES A SHADOW AFTER BEEN STRICKEN BY THE SUN RAYS WHAT IS THE LENGTH OF THE SHADOW IF THE HYPOTENUS IS 100 M LONG

You are a 70kg astronaut floating at rest in zero gravity holding your laptop. Your hard drive turns on (increasing from 0 to 5400 rpm). How fast do you spin in rad/s? I'm not sure how to understand this problem. What procedure should I use to solve this?

70. ## Chemistry

What are the atomic ratios of Berylium, Magnesium, Silicon, Chlorine and Calcium?

71. ## Chemistry

1.When mixing 45mL of 0.65M acetic acid with 65mL of 0.45M NaOH the resulting mixture is a. basic b. neutral c. acidic d. pH < 7 e. both c and d The correct answer is b. neutral right? 2.The concentration of [OH-] in Al(OH)3 is 2.6 x 10^-5. What is the

72. ## Chemistry

1.In a titration, 50.0 mL of an acetic acid solution required 20.0 mL of a standard solution of 0.200 mol/L NaOH(aq). The concentration of the acetic acid solution is a. 0.08 mol/L. b. 0.50 mol/L. c. 0.05 mol/L. d. 1.0 mol/L. e. 0.30 mol/L. How do I solve

73. ## Algebra

Pressure acting on 30 m^3 of a gas is reduced from 2 to 1 atmospheres. What new volume does the gas occupy? (Boyles law) What if it is increased from 1 to 2? What new volume?

74. ## random

how long does it usual take for someone not to be very very sad about a family member that passed away

75. ## Math

Does the table represent an exponential function? x 1 2 3 4 y –1 –8 –27 –64 a. yes b. no***

76. ## random

why cant I find a question that I posted earlier? I find it but when I click on it it takes me back to the list of questions asked today, but mine is not there! WHY?

77. ## AP Chemistry

So I already posted this question earlier today and got a reply but now that Im working through it, its not working. What mass of solid sodium formate (of MW 68.01) must be added to 130 mL of 0.63 mol/L formic acid (HCOOH) to make a buffer solution having

78. ## Sign Language

An adjective is a word used to describe an action verb? A:true B:false*** Is this correct?

79. ## math

i will roll a fair 6-sided dice. Writing your answers as fractions in their lowest terms, what is the probability of rolling: 1) a 4? 2) an even number? 3) a 7? 4) number less than 5? 5) number less than 10?

80. ## Geography

of the contiguous united states, which capital city is the farthest east? Is it Augusta capital of Maine?

81. ## Chemistry

2. The red subatomic particles can best be described as? counted into the mass of the atom, negatively charged, located in the electron cloud not counted into the mass of the atom, negatively charged, located in the electron cloud not counted into the mass

82. ## Math

Micah has a new remotely controlled car that has a circular range with a radius of 30 feet. What is the area of the circular range?

83. ## geography

In what common hemisphere are asia, africa, australia, and antarctica located? Eastern Hemisphere?? What sea can be found near the southern tip of Greenland? Labrador Sea?

84. ## Science

What is the relationship between HIV and AIDS?

85. ## Math

How do you rotate a point other than the origin? Can you give me a video or explain it?

86. ## Math

In order to compare to function to determine which has the greater output for the input 0, which characteristic of the function should be compared? a) rate of exchange b) slope c) x-intercept d) y-intercept is it the y-intercept?

87. ## history

“The liberty of the press is essential to the security of freedom in a state: it ought not, to be restrained in his common wealth.” - The above quote runs counter to a set of legislative acts during the Adams admiration that were inspired by _. • the

88. ## AP Chemistry

What mass of solid sodium formate (of MW 68.01) must be added to 130 mL of 0.63 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 3.68? Ka = 0.00018 for HCOOH. Answer in units of g I tried converting the pH to H+ and using the

89. ## math

how many liters of a 60% antifreeze solution should be added to 9 liters of a 30% solution to get a 50% antifreeze solution

it is the policy of Beaj ltd to replace its vehicle after 5 years. the market value of a vehicle due for replacement is estimated to be \$20000. a new vehicle to replace it is quoted as \$78000. the money cost of capital is 25%. the acquisition of the new

91. ## Math

Sandra needs 2 5/8 yards of rope she needs for her class project. She has 5 pieces of rope that are each 3/8 yards long. Does Sandra have enough rope. If not explain why. My son wrote no she doesn’t she needs 18 more yards of rope. Can you explain this

92. ## math

The science club sold 35 T-shirts last week and 28 T-shirts this week. What is the percentage of decrease in the number of T-shirts sold?

93. ## math

Find the geometric mean of the pair of numbers below. If necessary, give the answer in simplest radical form. 5 and 18

94. ## Math

Greg is buying a bike on a payment plan. the equation y=20x+600 models the amount he has left to pay, where x is the number of weeks and y is the amount of money owed in dollars. Lin is also buying a bike on a payment plan. The bike costs \$500. She will

95. ## Math/Physics

How would you solve this? 1/2 mv^2 - 1/2 m x 25 = mg x 100sin20 I obtained this from the question: A girl on a sledge starts, with a speed of 5 m/s, at the top of a slope of length 100 m which is at an angle of 20 degrees to the horizontal. The sledge

96. ## math

Write an equation in point-slope form for the line through the given point with the given slope. (-4,6); m=3/4 a. y-6=3/4x+4 b. y-6=3/4(x-4) c. y-6=3/4(x+4) d. y+6=3/4(x+4) I am unaware of what the answer could be to this problem and help will be very

97. ## english

doing a persuasive essay on ANY topic, can someone give me ideas.

98. ## math

the population of mun is 3/4 the population of lake. if the sum of their populations is 1960, what is the population of each town

99. ## chemistry

the blue subatomic particle can best be described as? not counted in the mass of the atom, located in the electron cloud, negatively charged counted in the mass of the atom, located in the nucleus, has a positive charge. not counted in the mass of the

100. ## mathematics

camine has 3 pieces of wire . the lenght 1st wire 5 meters the lenght of second wire is 3 meters less than tice the lenght of third wire . what is the peremeter of the triangle if the wires are connected end to end and the scond 9 meters long