# Questions Asked onMarch 10, 2017

1. ## statistics

A bag contains red and blue marbles. Two marbles are drawn without replacement. The probability of selecting a red marble and then a blue marble is 0 .28. The probability of selecting a red marble on the first draw is 0.5. What is the probability of

2. ## Math

The lock is numbered from 0-49. Each combination uses a right,left, right pattern. Find the total # of possible combinations. I know for a fact it equals 125000 but how do you get that????

3. ## PRe calc story problem!!

A radioactive element decays exponentially according to the function Q(t) = Q0ekt .If 100 mg of the element decays to 25 mg in 12 days, find the half-life of the element.

4. ## Math

Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours. Bailey can wash all the dogs in 3 hours. How long will it take them to wash the dogs if they work together?

5. ## math

The value of an investment A (in dollars) after t years is given by the function A(t) = A0ekt . If it takes 10 years for an investment of \$1,000 to triple, how many years will it take for the investment to be \$9,000? Simplify your answer completely. I am

6. ## math

the scale 1;20000.calculat actual distance between two points which are 2.7 cm apar map..give answer in koilometers

7. ## pre calc

The number N of bacteria in a culture at time t (in hours) grows exponentially according to the function N(t) = 1000e^0.01t. 1.What is the population after 4 hours? 2.When will the number of bacteria reach 1700? 3. When will the number of bacteria double?

8. ## pre calc

The population of a colony of mosquitoes grows exponentially according to the function P(t) = P0ekt 1. If there are 1,000 mosquitoes initially and there are 1800 after 1 day, what is the size of the colony after 3 days? 2. How long will it take the colony

9. ## geometry

Do you use the formula: (n-2)180 / n to find the measure of each arc that corresponds to a side of a polygon? Example: a hexagon (6-2))180/6 = 120 ?

10. ## Math

Marcus bake loaf of bread of banana bread for a party he cut the loaf into equal size . At the end of the party there were 6 pieces left . Explain how you can find the number of pieces in the whole loaf if Marcus told 1/3 of the loaf was left

11. ## Algebra

Alka and Shweta invested ₹1800 and ₹2400 respectively in a small business.They made a profit of ₹1400.They decided to divide the profit between them in the ratio of Thier investments.How much did each get as profit? ₹1800/₹2400=3/4

12. ## english

Why is the initial background research step important? a. It helps you find very detailed information about the topic to answer key questions. b. It helps you become familiar with a topic before doing deeper research. c. It helps you to determine which

13. ## English

7. After he is wounded in Act III, Scene 1, Mercutio says to Romeo, "Why the devil came you between us? I was hurt your arm." Which of the following is the best paraphrase of Mercutio's words? a. I am so badly wounded that I feel I will die. b. Why did you

14. ## Math

The empty gas tank of the truck needs to be completely filled. The tank is shaped like a cylinder that is 4 feet long with a diameter of 2.4 feet. Suppose gas is poured into the tank at a rate of 1.7 thirds of a foot per minute. How many minutes does it

15. ## economic

You have a credit card that charges 18% per year interest or 1.5% per month. You buy a TV for \$1100 on the credit card, but at the end of the month you only pay \$100. You continue to pay \$100 the next month. You pay the entire balance in the third month.

16. ## CHEM 101 (edited)

Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH values: Ca(s)+CO2(g)+1/2O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ I have literally tried everything and I don't

17. ## geometry

when do you use the following formula: (n-2)180 divided by n

18. ## Math,science,social,Hindi,english

A person weighing 50kg runs up a hill raising himself vertically 10m in 20sec. Calculate the power of the person.

19. ## Materials Science

The atomic radii of Mg2+ and F-1 ions are 0.072 and 0.133 nm, respectively. (a) Calculate the force of attraction between these two ions at their equilibrium interionic separation (i.e., when the ions just touch one another). (b) What is the force of

20. ## Math

Suppose that y varies inversely with x. Write a function that models the inverse function. x = 25 when y = 5

21. ## English

What do you suppose McPhee means by “the influence of Ernest Hemingway evidently extended to the Pentagon”? This is the context this question is referring to: And inevitably we have come to Ernest Hemingway and the tip of the iceberg—or, how to

22. ## Physics

9.) A 1 570 kg satellite orbits a planet in a circle of radius 5.94 x 106 m. Relative to zero at infinity the gravitational potential energy of this satellite is -9.32 x 1011 J. What is the mass of the planet?

23. ## Social Studies

in what way did the efforts of the Tuskegee Airmen contribute to the hopes for improved civil rights in the United States? A. The Tuskegee showed that integrated fighting units cold work well. B. The efforts of the African American Tuskegee Airmen during

24. ## Chemistry

At 25 degree celsius, which balloon has the greater volume, an oxygen balloon O2 at 1.2 atm with a mass of 16.0 g, or helium He balloon at 1.2 atm with a mass of 2.0 g?

25. ## math

sector 2 on a spinner is a 90 digrese (sorry for spelling) sector. if the spinner is spun twice, what is the probability that it will stop in sector 2 both times?

26. ## Algebra

The numerator and the denominator of a fraction are in a ratio 3:2.If 3 is added to the numerator and 2 is subtracted from the denominator,a new fraction is formed whose value is 9/4 . Find the original fraction.

27. ## Chemistry

The relationship between velocity(U) of a gas molecules and their relative molecular mass(RAM) is?

28. ## math

the ratio of dogs to cats in the neighborhood was 3 to 7. If a total of 210 dogs and cats were in the neighborhood, how many cats were there?

29. ## Science

Granite lasts a long time when it is used for building in areas where

30. ## algebra pleeeease help

Which solid has one base that is a triangle and three lateral surfaces that are triangles? (1 point) triangular pyramid triangular prism rectangular prism rectangular pyramid 2. Sarah needs to cover the lateral area and the base on top of the cylinder. A

31. ## L.L

Why do authors use personification

asked by Young Trippy Lil G
32. ## Social Studies

1. what happened initially when the un forces went to support south Korea? A. North Korean forces were quickly overwhelmed. B. UN forces were outnumbered and poorly supplied. C. The fighting escalated beyond the Korean borders D. South Korea did not want

33. ## Chemistry

What's the resulting solution if 2000cm3 of 1MH2S04 is mixed with 20cm3 of 1M NaOH? i got 0.5M,acidic in concentration.

34. ## social studies

1. In what way did both the U.S. government and its citizens benefit from the war? (WWII) A. The government was able to defeat U.S. enemies, and citizens could freely travel. B. The government was able to enforce its isolationist policy, and citizens could

35. ## Math

can some1 Correct me pls A class of 24 students was asked to identify a team sport in which they have participated. Their responses are shown in the line plot. a. How many responses are recorded in the line plot? b. What is the total number of students

36. ## Social

Which of the following was a key factor in the passage of the Emergency Quota Act in 1921? A. the desire to have only American-born citizens in the United States B. the fear of a second wave of communist immigrants C. a fear that immigrants would take jobs

37. ## statistics

A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue?

38. ## Math

Find the area of a parallelogram:base 5 cm height 20cm

39. ## geometry

what is the measure of the arc of a regular octagon inscribed in a circle? i think it is 45. am i correct

40. ## math

if you know the radius of a circle how can you find its diameter?

41. ## Calculus

Solve the initial value problem. dy/dx = 3 sinx and y = 2 when x = 0. Is this c = 5?

42. ## CHEM 101

Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH values: Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ

43. ## math

walter deposits \$5,000 in a bank account that pays 9% simple interest. If he doesn't change the principal, what will his balance be in 4 years?.

44. ## algebra

How would you graph this, i keep entering it only and keep getting it wrong. x and y axis are numbered 1 to 10. please help y+5=-2/3(x-4)

45. ## Algebra

a large pizza costs \$6.80 plus \$.90 per topping. a different pizza costs \$7.30 plus \$.65 per topping. How many toppings need to be added to each piece in order for the pizzas to cost the same thing?

46. ## Chemistry

Can someone check my answer and let me know me if the are right or wrong. If I wrong can you give me the right answer plz. 1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) * 34

47. ## computer programming

Create the psuedocode for an application class named Monogram. Its main() method holds three variables that hold your first, middle, and last initials, respectively. Create a method to which you pass the three initials and that displays the initials

48. ## Calculus

Solve the initial value problem. 7x^6-3x^2+5 and u = 1 when x = 1. Is this x^7 - x^3 + 5x - 4?

49. ## Biology

A biologist found that 20% of a population of bats are brown, which is recessive. assuming the population shows Hardy-Weinberg equilibrium, determine the genotype and the allele frequencies of the population?

50. ## Math

Please Help!!!! I do not understand and if someone could help that would be great! Thanks !! Problem #1: Find the total amount if you deposit \$500 at a rate of 5% for two years using simple interest. Year 1 Year 2 Problem #2: Find the total amount if you

51. ## MATH

The grocery store parking lot is shaped like a parallelogram. Mr.Campbell is paving the parking lot.The area of the parking lot is 6x^2-3x-3m^2. what are the measures of the height and base of the parking lot. i did 3(2x^2-x-m^2) as my first step but now i

52. ## Math

Find the volume of a square pyramid with a base length of 9cm and a height of 4cm

53. ## Accounting Help (with answers for checking)

Ben Guslists, vice-president of sales, has recommended adding a new product line. A market study and cost analysis show that the new line should yield the following annual results: New Sales \$2,800,000.00 Cost of Sales \$1,600,000.00 Operating Expenses

54. ## Physics

A magnetic field is uniform in a region of radius 10cm, and increasing at 0.02 Tesla/second. What is the magnitude of electric field in the region outside the magnetic field at radius of 15 cm?

55. ## algebra

5 children and 2 adults tickets are \$98. adult's ticket is 3 times more than childs solve the equation

56. ## Math

F(x) = -x^2 - x +2 graph function identify the vertex and axis of symmerty. Can some one explain the steps to get answer? I know I need to find the points on a graph just so confused

57. ## Gen Chem 125

A process takes place at constant pressure. The volume changes and the temperature increases by 91.0oC. The heat capacity of the system at constant volume, CV, is 695.6 kJ/oC. What is ΔE in kJ? (Careful--pay attention to the units of the heat capacity.)

58. ## Math

Why does refraction occur?

59. ## Chemistry

what is the relative atomic mass of a silicon containing ore with 92% 28'Si,5%29'Si and 3%30'Si?

60. ## pre calc

A radioactive element decays exponentially according to the function Q(t) = Q0ekt .If 100 mg of the element decays to 25 mg in 12 days, find the half-life of the element. please help

61. ## English

1. I got a nice gift which is for my birthday. 2. I got a nice gift for my birthday. (Can we use #1? In #1, "which is for my birthday" is an adjective clause. In #2, doesn't 'for my birthday' modify 'gift'? Isn't it an adjective phrase?) 3. I'm looking for

62. ## science

were must be the pivot situated on a straight lever 2m long,if a downward effort of 200N at one end is to lift a mass of 50kg at the other end.state the distance from the effort.

63. ## math

Please help, 1) How do you solve 2017^2017 without a calculator? 2) What is the last digit of the solution to this problem: 2017^(2017^2017)? Thank you!

64. ## Math

Similar polygons are _____ the same size. 1.(always) 2.sometimes 3.never

asked by Help I need somebody not just anybody
65. ## Physics

One guideline for how diffraction affects shadows is that distinct shadows are created if the width of something is a minimum of 10 times greater than the wave’s wavelength. What would be the narrowest width of something to make a distinct shadow with

66. ## Social Studies

How was the Islamic republic established?

67. ## Science

When a silvery powdery substance was added to boiling beans,the beans get cooked quicker than normal. what may this be?

68. ## Physics

For a pendulum that completes fifteen complete swings in 34.8 seconds, how much is the frequency?

69. ## Electricity and Magnetism

Consider free protons following a circular path in a uniform magnetic field with a radius of 1m. At t =0s, the magnitude of the uniform magnetic field begins to increase at 0.001 T/s . Find the tangential acceleration of the protons .

70. ## health

what type of muscle is only found in one place of the body?

71. ## jk

A ball is projected horizontally with a initial velocity 8m/s .Find its position and velocity after 1/4 second

72. ## LEA

''Nine Haiku's During A Drout'' which form best describes this poem? 1limerick 2haiku (my answer) 3narrative 4concrete

73. ## English

PLEASE HELP I DONT UNDERSTAND THIS!!! WHAT IS MOODY VERBS????????????? I have gone through my lesson 3 times and I still don't understand what moody verbs are. can someone explain in a simple way what it is? thx!

74. ## All subjects

The villagers build underground water canal to fill the well, in which water flow with 2m/sec & its width is 30cm & length 80cm. How much time will it take to fill one well of radius 3cm & 21m deep

75. ## Math

which of the following is a diagram of XY

76. ## Calculus - Derivatives

Use implicit differentiation to find the second derivative y'' of the function given. x^2 + 5y^3 = 8

77. ## need help zigma mathematics

find the zigma of 1/2+2/3+3/4+....n/(n+1) please show step help

78. ## math

The number of employees at a plant continually fluctuates. One month started at 568. Then 102 employees were hired, and the next 57 employees were displaced. If the plant then plans to add 10% more employees, how many will it have?

79. ## math

A customer purchased a jacket for \$65. This was 80% of the original price.

80. ## Social Studies

What were Truman’s two goals during the Korean War? A. to punish the Soviet Union for its aggression and unite Korea B. to punish North Korea for its aggression and unite Korea C. to defeat North Korea and fire General MacArthur D.to take South Korea as

81. ## Maths

A man has rupees 1200 in his pockets he lost 12 whole number one upon two percent of his money and spend 70% of the remainder of how much money was left with him

82. ## Science

How many grams of NaOH will be needed to prepare 250ml of 0.1M solution:-

84. ## Math

I have been told to find the volume of 4 containers then the worksheet asked. "Now that you have completed your research, which container would you recommend using for each portion size that a customer might buy? Why is this size the best choice" I am

85. ## Language Arts

"I'd wash the Amazon river and clean the oily Carib & Gulf of Mexico, Rub that smog off the North Pole, wipe up all the pipelines in Alaska, Rub a dub dub for Rocky Flats and Los Alamos, Flush that sparkly Cesium out of Love Canal" In this excerpt,

86. ## Accelerated Math

The cost of a student ticket to the school play is \$7. Write an equation that correctly relates the total cost, c, for a particular number, s, of student tickets purchased. Identify the independent and dependent variables. (3 points)

87. ## English

The crowd encouraged the team. The team scored 10 points. a-the crowd encouraged the team to score 10 points. b-When the crowd encouraged the team, the team scored 10 points. c-The crowd encouraged the team, the team scored 10 points. d-The team,encouraged

88. ## math

simplify (8*10^7)(7*10^4) i think it's 5.6*10^10 simplify (3*10^6)(8*10^-4) i think it's 2.4*10^3 Astronomers measure large distances in light-years. One light-year 5.88*10^12 mi Star is 9.8*10^1 light years from Earth in scientific notation how many miles

89. ## History

1. Which of the following led to the "county commissioner scandal"? A. False invoicing in return for kickbacks B. Paying off voters to obtain votes during an election C. Falsifying property tax records D. Inflating the state budget to cover up acts of

90. ## English

Is it ethical to use company time to solicited signatures for a petition concerning social issue?

91. ## math

Consider these two tables for Line 1 and Line 2. Line 1: x | y 0 1 3 4 Line 2: x | y 0 0 2 4 (a) Graph Line 1 (already did this) (b) Graph Line 2 on the same graph (already did this) (c) What is the solution to the system? Use graphing to solve. Explain

92. ## SS-HELP

i have no idea what they are asking, help!! For this portfolio project, you will conduct research and examine documents that show the thoughts of both immigrants and people who opposed immigration. You will use the research and primary documents to write

asked by W.D gaster blaster master
93. ## Physics

A 4700 kg truck on a level surface experiences a force applied due to the engine of 3700 N forward. If the force of friction acting on the truck is 189 N backward: a) Determine the values of the other forces acting on the truck. b) Draw a free body diagram

94. ## SS

1. What is true about both Germany and Italy leading up to World War II? A. Both believed they had a right to land outside of their borders. B. Both countries owed repayments for World War I. C. Both wanted revenge for WWI. D. Both wanted to transform into

95. ## english

what are nonverbal ways people can show determination?

96. ## physics

The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of q1 = +8.50 Ã‚ÂµC; the other two have identical magnitudes, but opposite signs: q2 = -5.50 Ã‚ÂµC and q3 = 5.5 Ã‚ÂµC. (a) Determine the

97. ## physics

A positive and a negative charge, each with a magnitude of 1.41 x 10^-5 C, are separated by a distance of 0.44 m. Find the force on each of the particles.

98. ## Technology

Which of the following is covered by copyright A.Music B. Books*** C. Website content D. All of the above

99. ## english

Do people sometimes communicate their determination in the ways of anger, frighten, annoy, or confuse others? How?

100. ## english

What are some constructive ways that people can communicate their determination to take action or reach a goal?

101. ## Chemistry

How to calculate the percentage of chlorine isotopes