# Questions Asked onJune 10, 2015

1. ## English

Which statement is false? A. Parentheticals aren’t crucial to the meaning of a sentence. B. Parentheticals are like asides. C. Parentheticals are crucial to the meaning of a sentence. D. Parentheticals are like comments.

2. ## Physics 11th

, a ball is thrown vertically upward from the top of the tower at 4.9 metres per second it strikes the pond near the base of the towers after 3 seconds the height of the tower is. Pls reply...

3. ## Math

the hundred thousands digit of a six-digit even number is 3 more than the thousands digit,which is twice the ones digit.give at least four nuumbers that satisfy the given condition

4. ## algebra2

how many solution are there to the equation below? 3x-10(x+2)=13-7x A.1 B.0 C.Infinitely many

5. ## stat

about 35% of a population has blue eyes if four different people are randomly selected what is the probability that they all have blue eyes?

6. ## Math

The sales tax is \$0.065 per dollar where Ray lives. What percent of a dollar is the sales tax?? Please help!!

You roll a number cube twice. Find P (even, then not 2). Write the probability as a fraction in simplest form. I'm fully clueless to the answer to this question. Can someone please help me out? Thanks Very Much and need the answer A.S.A.P!

8. ## 6th Grade Math :(

Gabriella went skiing. She paid \$35 to rent skis and \$15 an our to ski. If she paid a total of \$95, how many hours did she ski? Write an equation to represent the situation and solve it. I don't understand this. I did this problem before and my teacher

9. ## Physics

A converging lens has a virtual object located a finite distance away. Which of the following must be true? (Select all that apply.) a) f > q b) The image is virtual. c) p < 0 d) The image is real. e) p > 0 Hi, can someone explain which is correct or

10. ## algebra2

How many solutions are there to the equation below? 145=10x-8x

11. ## Calculus 1

The height (in meters) of a projectile shot vertically upward from a point 3 m above ground level with an initial velocity of 21.5 m/s is h = 3 + 21.5t − 4.9t2 after t seconds. (Round your answers to two decimal places.) a. When does it hit the ground? I

12. ## Geometry

A sample of a plane geometric surface is the A. surface of a sphere. B. side of a cylinder. C. side of a box. D. side of a cone. I'm stuck on this simple but tricky question. I'm leaning toward A or C.

13. ## Social Studies

In The Wealth of Nations, Adam Smith mentions that very good grapes could be grown in Scotland. However, growing high quality grapes in Scotland would be about 30 times as expensive as purchasing grapes from foreign countries. Some nations are better than

14. ## Chemistry

How much heat would be absorbed by 55 grams of copper when heated from 24 degrees Celsius to 40 degrees Celsius? The specific heat of copper is .385 My answer is 338.8 Joules. Is this correct?

15. ## aplied physics

two charges q1=-2uc and q2=3uc are placed at a distance of 6cm from each other. if rubber (Er=2.94) is placed between charges, find magnitude of electric force between charges.

16. ## Math

There is a large bag with marbles in it. There are 23 red ones, 16 black ones, 5 blue ones, 17 orange ones, 4 white ones, and 15 purple ones. Juanita reaches in without looking and selects one marble. What is the probability that it is purple?

17. ## Chemistry

What is the total internal energy change (∆E), in J, of a system that releases 202.90 J of heat and absorbs 315.7 J of work from the surroundings?

18. ## History

Which was not a reason for U.S. intervention in Latin America during the Cold War era? Allende's rise in Chile Sandinista control of Nicaragua Argentina's invasion of the Falkland Islands civil war in El Salvador

19. ## calculus1

find limit if it existed 1)lim x goes to 0 tanx/2x^2-8x 2)lim x goes to-2 x^3+8/x^4-16

20. ## Math

A bank offers two interest account plans. Plan A gives you 6% interest compound annually. Plan B gives you 13% annual simple interest. You plan to invest \$2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years? How

21. ## Law

There are two types of miscarriage of justice and after 2003, there was emphasis the conviction of guilty.

22. ## chemistry

What volume of hydrogen gas at standard temperature and pressure can be collected from the electrolysis of water using a current of 100mA for a period of 3 hours? I know that the answer is 0.125 L but I don't know how to approach the problem. I multiplied

23. ## algebra2

How many solutions are there to the equation below? 220=2x-12x a.1 b. Infinitely many c.2

24. ## Statsitcs

A roulette wheel has 38 slots, numbered 0,00,and 1 to 36. the slots 0 and 00 are colored green, 18 of the others are red and 18 are black. The dealer spins the wheel and at the same time rolls a small ball along the wheel in the opposite direction. The

25. ## STAT

You have been hired as a consultant for a company that would like to start a new marketing campaign to increase their online sales. They have given you data for 840 of their customers and would like to know who they should target in their new campaign

26. ## physics

If the building absorbed so much heat that it turned into a liquid, then it would have undergone a phase change known as _________.

27. ## us gov

what single word means the same thing as representative democracy

28. ## chemistry

how do you do acids/bases, oxidation, buffers, and Boyle's Law. what are the rules for each, can u give me an example for each and explaining how you get the answers, because i'm confused on how you do these.

29. ## chemistry

Okay so the question is: what would be the molarity of a saturated aqueous solution of NaI prepared at 25 C, assuming that the added NaI does not add significantly to the volume of the water? My question is, I got confused on what formula I use to for the

30. ## Social Studies

which of the following events most directly lead to American military involvement in world war 2? A: the Japanese attack on pearl Harbor. B: the bombing of London C: the soviet Union entering the war. D: Germany's invasion of Poland

31. ## Social Studies

In a federal system in government (also known as federation) the local and state governments share power with the central government, though the central has finally authorized. explain how this is different from a unitary system of government?

32. ## math

If the sum of first n term is 1600,and the common different is 2 while the 1st term is 1.find n?

33. ## Pre Calculus

a biologist has three salt solutions: some 5% solution, some 15% solution, and some 25% solution. She needs to mix some of each to get 50 liters of 20% solution. She wants to use twice as much of the 5% solution as the 15% solution. How much of each

34. ## Calc

Find the point on the graph of y = x^2 where the tangent line is parallel to the line -5x+3y=5

35. ## chemistry

A coin dealer offers to sell you an ancient nickel coin that is 3.1 cm in diameter and 4.65 mm in thickness. A) The density of nickel is 8.9 g/cm3. How much should the coin weigh if it is pure nickel? (in grams) B) If nickel sells for \$0.216 per troy

36. ## collocation

1.Analyze the occurrences of collocation used in the below article Puffin Therapy The Atlantic puffin simply vanishes for months at a time. But when it returns to land, the fearless, clown-faced seabird is a sight that soothes the soul of many a

37. ## Algebra

Factor quadratic expressions: 2x^2 + 9x + 4 10x^2 + 70x + 100 Solve quadratic equations by factoring: 2x^2 + 9x + 4 = 0 Solve by taking square roots: (x - 5)^2 - 81 = 0

38. ## physics

How would you use a piece of Polaroid to look at the bottom of a pond if reflections are a problem? Would it be any different if the pond is covered with a layer of oil? Hint: (Refractive index of water = 1.33 and of oil = 1.5). Show calculations.

39. ## Urgent - physics

Air molecules and dust particles in the atmosphere will scatter sunlight. From a consideration of the position of the sun, estimate the direction of incidence of the sun's rays on the atmosphere. In what direction will an observer on the earth's surface

40. ## English

Which sentence needs a possessive apostrophe? A. When the cats away, the mice will play. B. Back in 68, we though the world was our oyster. C. Parson Brown said we’re all our brothers keepers. D. Be sure to mind your Ps and Qs.

41. ## math trigonometry

Simplify cos180*sin225*cos80/sin170*tan135

42. ## math trigonometry

Prove that 2sin150*cos315*cos(90-x)/sin(360-x)cos(-240)sin135

43. ## chemistry

How many milliliters of water must be added to 153.2 mL of 2.73 M KOH to give a 1.68 M solution?

44. ## math trigonometry

If cos 20=m determine the values of the following in terms of m. (a) cos(-200) (b)sin 250 (c)sin 20 thanks

45. ## Probabilities

Need some help please! A box contains four good light bulbs and three defective ones. Bulbs are selected one at a time (without replacement). Find the probability that the second defective bulb is found on the third selection.

46. ## math help trigonometry

Prove the following identity tan x cos x/sin x=1/sin x cos x

47. ## chemistry

Calculate the number of moles of each of the ions in the following solution: 30.8 mL of 0.507 M AlCl3

48. ## Precalc

Find a rectangular equation for the plane curve defined by the parametric equations. x = sin(theta) y = 3cos(theta)

49. ## informal Logic

Zizek would agree most with which of the following statements about ecology? (Points : 1) Humans are disturbing the primordial harmony of nature. Humans ought to change their actions Nature is the unfathomable mother of humanity Nature is a dangerous

50. ## calculus1

Hi, I have 3 problems here need to be solved, help me please 1.Evaluate ∫ sin2x sec^5(2x)dx 2. If f(x)=√x and P is a partition of [1,16] determined by 1,3,5,7,9,16,find a Riemann sum Rp of f by choosing the numbers 1,4,5,9 and 9(yes 9 again) in the

Thinking maps are visual learning tools. Each map is based on fundamental thinking process, such as a quantity, sequencing, classifying, comparing and contrasting, and can be used together as a set of tools for showing relationships. Create at least one

52. ## Chemistry

If a 0.688 mole sample of silver at 19.6°C absorbs 1.162 kJ of heat, what is the final temperature in C?

53. ## calculus1

1. Evaluate ∫(0-4) x/√x^2+9 dx 2. Given F(x)= ∫(0-x) t√t^2+4 dt, find F'(x)

54. ## k92 sec.

At stp what volume of SO2 gas will be produced when 2.00g of CS2 is burnt?

55. ## Physics

A box slides along a rough floor with initial kinetic energy of 7 J. A person pushes on the box, in the same direction as its velocity doing 25 J of work. The velocity of the box is doubled. Find the magnitude of the work done by friction.

56. ## economics

are there any welfare or subsidy payment that should be reviewd or added

57. ## pre-calculus 11

I have the question y=-|x^2 -9| I am asked for the piecewise function. I have written y={-x^2 +9 if x less than equal to -3} { x^2 -9 if x is greater than equal to 3} I am wondering if I have my are signs backwards.My reasons for choosing the signs I have

58. ## Functions

What is the instantaneous rate of change at cos pi/4?

59. ## pre-calculus 11

I am asked to solve the absolute value equation of |1/2x +1| =x+1 graphically. I can solve this algebraically and consider two cases for the absolute value one being positive and the other negative. I know this will be a straight line and when I solved it

60. ## Trig/ algebra 2

if f(x) = sin4x-cos2x, find f(pi/8)

61. ## L.A.

2.the most likely reason the author includes lines 17-25 is to A:Show how the main one another. B:provide an explanation of the values and rules that existed during the time in which the play is set. C:inform the audience of Jack's secret identity before

62. ## pre-calculus 11

I have the question what is the equation of the function in the form f(x) = 1/x-c for the function with a vertical asymptote at x=1? sketch the graph. I am uncertain how I plug this into a graphing calculator. Could I substitute 1 for x and then put an x

63. ## Math

If f and g are functions defined for all real numbers, and f is an odd function, then f ∘ g is also an odd function. Justify. I wrote false cause for example if f = x^3(odd) and g=x^2(even) the fog is even.

64. ## Physics

What is the tension in a 1-meter string that is spinning a 0.5-kg rock in a horizontal circle 3 times per second?

65. ## kapahi

In a beg with 8 red balls and 11 blues balls how many 5 balls boxes can be chosen those have 4 blue balls?

66. ## Pre-Algebra

4.)Karen’s ice cream shop has 4 more than 2 times as many flavors as Jim’s ice cream shop. Together they have 34 flavors. Solve the equation x + 2x + 4 = 34 to find the number of flavors at Karen’s ice cream shop. a)10 flavors b)24 flavors c)14

67. ## English communication, part i

In which of the following sentences is the word compliment used correctly

68. ## phsics

what equation deccribe the condition for observing the fourth dark fringe in a interference pattern correctly

69. ## Science

What is the density of a substance with a mass of 0.0450 kg and a volume of 26.4 ml

70. ## pre-calculus 11

I have f(x) + 1/ x-c this is the question and I am told for the function with a vertical asymptote at x=1 Mr. Reimy was kind enough to provide this information comparing it to y = 1/x for the first interpretation the graph of y = 1/x would simply be

71. ## physics

A marble is flicked horizontally off a desk with a speed of 3.1 m/s. If it takes the marble 0.8 seconds to hit the ground, how far from the desk does it land?

72. ## calculus1

Find limit if exists 1. Lim x goes to 0 x^2cos(1/x^3) 2.lim x goes to 1 to the left 4x/x^2+2x-3 3. Lim x goes to π to the right cscx

73. ## chemistry

How much 35.6 M H2SO4 is needed to make a 1 L solution that is .007 ppm? Not sure how to convert from M to ppm-is there a formula?

74. ## calculus1

Find the arc length of the graph of the equation y+1/4x+x^3/3=0 from the point(2,67/24) to point(3,102/12) help me with this thanx!

75. ## Geometry

A chord PQ of a circle with radius r subtends an angle B at the center. Show that the area of the minor segment PQ=1/2.r^2.(B-sinB) and write down the area of the major segment PQ interms of r and B.

76. ## social studies

i need help. I do not know what caused the world war II. Can you guys help me?

77. ## enlish 1

Why does Neiterkob’s daughter most likely tell the myth “The Beginnings of the Maasai”?

78. ## Algebra 2

What is the solution to this equation? 4(x-8)+10=-10

79. ## Chemistry

A piece of copper 12 cm long, 8.5 cm wide, and .50 cm thick has a mass of 457 grams. What is its density? D = m/v D = 457 g / 12x8.5x.50 D = 457 / 51 = 8.96 g/cm^3 Is this correct?

80. ## Chemistry

Find the number of atoms in 138 grams of nickel. I'm not sure where to start. Can anyone help me?

81. ## science

Two velocity each 5 ms/s are inclined to each other at 60degree. Find their resultant

82. ## Finite Math

Fifty percent of students enrolled in calculus class have previously taken pre-calculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. Find the probability

83. ## algebra2

how many solutions are there to the equation below? 6x+30+4x=10(x+3) I want to know how to do this problems Please and Thank you

84. ## math

why is the answer to this problem? 5/3 -5/6

85. ## algebra2

!@#\$%^& many solutions are there to the equations below? 8x+47=8(x+5)

86. ## Math117A

An object 4.2 feet tall casts a shadow that is 12.6 feet long. How long in feet would the shadow be for an object which is 20.4 feet tall? a.12 feet B.6.8 feet C.28.8 feet d.61.2 feet

87. ## Algebra 2

solve using substitution method: x=-5 y=2 z=0 x+3y-z=1 -4x-2y+5z=16 7x+10y+6z=-15

88. ## MATH 117A

Select the approximate values of x that are solutions to f(x)=0,where f(x)=-9x^2+7x+2 A.{-0.22,1.00} B.{-9,7} C.{-0.78,-0.22} D.{-4.50,3,50}

What is the written form of the fraction ? Becky added 1/8 cup of brown sugar to the cookie batter. A. one-eighth B. one eighth