# Questions Asked onJune 19, 2014

1. ## math

Sue stacked one box onto another. The bottom box had the height of 2 1/3 feet and the top box had the height of 3 2/3 feet. How tall were the stacked boxes?

2. ## statistics

A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 490 college students showed that 33% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval. solution I

3. ## Astronomy

A quasar is observed at a redshift of z=1, which corresponds to a comoving radial distance of 3 Gpc. Its observed bolometric flux is 10^{-12} erg/cm^2/s. An interacting companion galaxy is seen 4 arcsec apart in projection. What is the bolometric

4. ## engkish

benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(blase)

5. ## chemistry

calculate the moles of solute present in 1.25 centimeter cube of 0.5 M h3po4 solution

6. ## Chemistry

Yesterday we combined Hydrochloric Acid HCl with Sodium Hydroxide NaOH in a violent reaction that resulted in water H2O and common table salt NaCl. How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium

7. ## Chemistry

biochemists consider the citric acid cycle to be the central reaction sequence in metabolism. One of the key steps is an oxidation catalyzed by the enzyme isocitrate dehydrogenase and the oxidizing agent NAD+. Under certain conditions, the reaction in

8. ## chemistry

A solution contains 72.0 g of HCl and 468 g of (C6H6). What is the mole fraction of benzene?

9. ## Physics

You have a grindstone with a mass of 90.0 kg, 0.340-m radius, and is turning at 90.0 rpm. You press a steel ax against it, bringing it to a stop in 36.0 s. (a) What is the change in kinetic energy of the grindstone? (b) If the tangential force due to the

10. ## math

A triangle has a height of x meters and a base of 14 meters. Write and solve an inequality for the values of x that give an area of at most 112 m2003-06-04-00-00_files/i0230000.jpg. A. 2003-06-04-00-00_files/i0230001.jpg m B.

11. ## physics

1.∫ x³(x+1)dx 2.∫ (1-cot²x)dx 3.∫ cosx(tan x + sec x) dx 4.∫ dx/√5x+8 using u= 5x+8 and using u= √5x+5

12. ## Chemistry

Which base is the strongest for the given [H+]? A)10^-9 B)10^-11 C)10^-10 D)10^-12

13. ## Chemistry

In the following reaction, 28 grams of Calcium Oxide CaO reacts with Carbon Dioxide CO2 to produce Calcium Carbonate CaCO3. How much Calcium Carbonate is produced? CaO+CO2 ---> CaCO3

14. ## math

Jefferson Bank made a loan at 6% interest for 146 days. If the amount of interest was \$36.50, use the ordinary interest method to find the amount of principal borrowed. Round to the nearest whole dollar amount

15. ## geometry

The angle of depression from D to F measures 25°. If EF = 10 yd, find DE

16. ## physics

1.∫ csc (u-π/2) cot (u-π/2) du. 2.∫ sec^2(3x+2)ds 3.∫ √3-2s ds 4. ∫ 12(y^4+y4y^2+1)^2 (4^3+2y) dy use u= y^4+4y^2+1

17. ## probability

90%of a countrys population are a right handed . what is the probability that exactly 29 people in a group of 30 are right handad?

18. ## Health

When a person has episodes of hypomania that shift back and forth with mild depression for at least two years, he or she has what form of bipolar disorder?

19. ## Chemistry

A solution of KCI is saturated at 50 degrees C. How many grams of solute are dissolved in 100g of water?

20. ## Algebra can you give me direction

Graph the line through the given point and with the given slope. (3,5); m = 1/2 Thank you

asked by Mary Ann
21. ## math

what is the next two consecutive even numbers more than 580,500?

22. ## math

the smallest number with the digits 2,4,8,9,7,and 5?

23. ## math

a number consists of 7 digits and the sum of all digits is one.what is the number?

24. ## mathematics

Shorts notes on arcs,sectors,circles

asked by john kelechi
25. ## math

the largest odd number with the digits 3,9,7,8,4 and 1?

26. ## math

the smallest even number greater than 600,000 with the digits 3,6,0,2,4,and 2?

27. ## Algebra direction how to do it

Graph the first-degree inequality in two unknowns. y > 4x -4 Thank you very much. I am not sure what a > is

asked by Mary Ann
28. ## english

And no matter how(5)______(benign)my manner, she seemed to view me as some sort of threat. At one point, she became irate and yelled, "That's(6)_____(redundant)I don't have time to answer the same question twice." When I asked her about serious issues, her

29. ## physics

A 100-kg object is lifted to an altitude of 1000 km. What is the weight of the object on the ground? Does it have the same mass and weight at 1000 km? Explain.

30. ## Government

A(n) _________________________ differs from a direct democracy in that only a small number of elected representatives actually vote on a specific issue

31. ## Algebra

Find the domains of rational expressions 2b-2/2b^2-8 please show steps

32. ## trig

if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0

33. ## physics

A proton has mass 1.7×10−27 kg. What is the magnitude of the impulse required to increase its speed from 0.995c to 0.998c? magnitude of impulse = i used mv=vectorp i don't know what to do from there

34. ## physics

what air speed and heading would enable a plane to travel [NE] with a ground speed of 275 km/h if there is a wind blowing at 55 km/h from the south?

35. ## Chemistry

How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your calculation.

36. ## physics

Find the work done by 2.32 moles of an ideal gas if its volume doubles at a constant temperature of 22.6°C.

37. ## math

I have 102 sandwiches my friends ate 5/8 of the chicken sandwiches and 2/3 of tuna sandwiches,how many of each sandwiches did I make

38. ## college physics

An ultrasonic motion sensor sends very short pulses for ultrasound to measure the distance to an object . The sensor cannot send another pulse until the echo form the previous pulse is detected. What is the maximum possible number of individual

39. ## Math

Find the roots by factoring. 25x squared - 30x= -9

40. ## chemistry

what would the written chemical reaction be to this problem? How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your

41. ## Math

A radioactive material takes 60 days to cut its radiation in half. If it starts at 100%, when will it be at 5%?

42. ## math

are the terms like or not. Explain why.4a,-122a

43. ## math

1. An architect draws house plans for a client using the scale 1in= 4ft. How long shall the architect draw a wall that will be 22ft long Ans 5 1/2 in 2. If a coin is flipped 5 times, the probability of getting heads all 5 times is Ans 1/32 3. a bag of

asked by need help
44. ## epidemiology

11. A study to assess the relationship between smoking and lung cancer found that the odds ratio is 4. Using your own words, interpret the odds ratio.

45. ## epi

10. Assume that early detection of disease X through screening improves prognosis. In order for a screening program to be most effective, at which point in the natural history in the diagram must the critical point be? [ONE POINT] a. Between A and B b.

46. ## engineering science

The mass of a truck is 5000kg and it is stationary on an incline plane making an angle of 16 with the horizontal. The coefficient of friction

47. ## Trigonometry

solve: sec x-2^.5=0

48. ## Math

I am working on word problems and trying to figure this one out and need help. One mile is 5280 feet. Justin has a stride of 32 inches. How many steps will he take to run a 26 mile marathon? 5280 x 26 = 137,280 and I am stuck.

49. ## math

find the value of sin 60degree/cos*cos 45degree- Cot 30degree+15cos90degree

50. ## Economic

Suppose a firm has a constant marginal cost of\$10 the current price of the product is \$25, and at that price, it is estimated that the price elasticity of demand is -3.0. Is the firm charging the optimal price for the product? Demonstrate how you know.

51. ## Math

Compare and contrast the solutions of ax^2 + h = 0 to the solutions of ax^2 = h, where a and h are positive.

52. ## algebra

2y/3+2y-6/15

asked by vanisha nisha
53. ## math

1. An architect draws house plans for a client using the scale 1in= 4ft. How long shall the architect draw a wall that will be 22ft long Ans 5 1/2 in 2. If a coin is flipped 5 times, the probability of getting heads all 5 times is Ans 1/32 3. a bag of

asked by need help
54. ## physics

A ball is thrown vertically upwards and returns to its initial position in 6.0 second. What is its initial speed

55. ## math

five friends plan a chess tournament. how many possible games can be played if each person plays with each other person exactly once.

56. ## chemistry

What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl

57. ## Math

Translate the following text into an equation involving ratios and solve it. " Anne is paid \$45 per hour, if she works 55 hours in a particular week, how much will she be paid that week?

58. ## english

10 examples of suffixes

59. ## Math

How are addition and multiplication used to solve a linear equation? Demonstrate by solving " 15x+7=31+3x

60. ## math

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -6x2 + 3x + 3.

61. ## Math

I am a number between 1 and 10. My tenth digit is one more than my one digit; my hundredth digit is the sum of my one and tenths digits.

asked by Andrea Vergara
62. ## algebra

By using just 5 threes get me the answer 31

63. ## math

From a survey of 100 college students, a marketing research company found that 55 students owned iPods, 25 owned cars, and 15 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)?

64. ## Economic

What is the south african government providing and to whom?

65. ## algerbra

translate the equation 3 over 5-5=x(y+7)into a verbal sentence

66. ## maths

Anu,Zami,Dan and Lemuel share 2 fruit bars.How can they share them equally? Sam,Farhana and Thandy must share 5 chocolate bars equally.How much chocolate will each get?

67. ## english

benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(glib)

68. ## english

1. Give two examples of each of the following elements of fiction and nonfiction from the texts you’ve read in Units 1, 2, and 3. Characters: Plot: Conflict: Setting: Point of View: Theme: Style: Tone: Perspective: Bias: Purpose:

69. ## College Algebra

A new store opens in New York. You received a coupon for \$5.00 off a pair of jeans j(x) = x-5. When you get to the store you learn that they are giving a 25% discount d(x)=.75x a) Write a composite function for the cost of the jeans if the 25% discount is

70. ## math

what is the square route of pi

asked by billy bob joe
71. ## Science

What is oxygen made of