1. Math

A man and his wife share a sum of money in the ratio 3:2. If the sum of money is doubled, then in what ratio should they divide it so that the man still receives the same amount?

2. calculus

7. A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cut-out square so that

3. word problems

you are considering 2 jobs. one job pays \$350 per week plus 2% commission on all sales. The second job pays \$1200 per month and 2.5% commission on all sales. assuming sales of \$1000,000 during the year, which job pays the best?

4. physics

A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of:

5. chemistry

What is the molar solubility of silver carbonate Ag2CO3 at 25 C if it is dissolved in a 0.15M solution of silver nitrate, AgNO3? Solubility constant: silver carbonate = 8.1 *10^(-12) Answer: 3.6 *10^(-10) So... not sure exactly what to do here. AgCO3 +

6. Physics

A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. What is the spring constant of each spring if the empty car bounces up and

7. Finance

Colgate-Palmolive Company has just paid an annual dividend of \$0.85. Analysts are predicting a 10% per year growth rate in earnings over the next five years. After that, Colgate’s earnings are expected to grow at the current industry average of 4.7% per

8. chemistry

A 25.00 mL sample of 0.4 M dimethylamine (CH3)2NH is titrated with 0.150 M HCl. What is the pH at the half-equivalence point? Not sure what to do here exactly, I'm bad with the titration problems. I know there are normally a couple tables (finding the

9. chemistry

What is the percent ionization of 0.025 M chlorous acid, HClO2 solution? Ka HClO2 = 1.1*10^(-2) Answer: 48% What I did: HClO2(aq) + H2O(l) ->

10. Physics

Halley comet which passes around the sun every 76 years has an elliptical orbit. when closest to the sun it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between hally's comet and the sun ( aphelion ) is

11. statistics

How large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week within 3% with 95% confidence?

12. algebra

Suppose a sample of Cesium-137 with initial mass of 200 grams decays to a mass of 160 grams voer the course of 10 years. Find the half-life of Cesium-137 (Round to the nearest year) How much Cesium-137 is left in the sample after 60 years? Round to the

13. PHYSICS HELP!

A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. What is the spring constant of each spring if the empty car bounces up and

14. biology

what is the original color of Phenolphthalein solution? pink or colourless?

15. physics

refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

16. chemistry

What is the pH of an aqueous solution of 0.10 M NaHC(3)H(2)O(4)? Answer: 10.9 What I did: NaHC(3)H(2)O(4) + H(2)O-->

Fred Salem works as a sales rep for Pennrock Greeting Cards. He has a three-year contract but quits after two years. As a result, Pennrock loses sales of \$1000. May Pennrock recover this amount from Salem?

18. Physics

In a binary star system, two stars orbit about their common center of mass, as shown in the figure . If r2 = 2r1, what is the ratio of the masses m2/m1 of the two stars?

19. algebra

rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hours. The speed of the river is 5km/h.Find Abby's speed in still water.

20. Chemistry

Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e-, how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of

21. british literature

in william blake's poem " the chimney sweeper," the metaphor"coffins of black represent (A) innocence (B)chimneya (C)daffodils (D)the tiger

22. Algebra

The ratio of the lengths of two pieces of ribbon is 1:3. If 4 ft were cut from each piece, the sum of the new lengths would be 4 ft. How long would each piece be ?

23. englis

In 3–5 sentences, write down what you told someone in that conversation. Once you write your sentences, go back and identify the sentence type of each one. They will be one of these three options: simple sentence, compound sentence, or complex sentence.

24. Chemistry

A closed manometer is filled with an oil with density of 0.776 g/mL. What is the pressure in mmHg when the liquid column in the manometer stands at 85.7 mm? im not sure what mm is suppose to stand for here (probably meters but that doesnt fit into the

25. HISTORY

What are the main differences between the Shiites and the Sunnis?

26. physics

refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

27. english

Please unscramble this word bssmyale it is related to at a dance

28. chemistry

How would you make up 255 mL of 0.150 M HNO3 from nitric acid that is 68.0% HNO3? The density of 68.0% HNO3 is 1.41 g/mL.

29. GRAMMAR

Dear MS. Writeacher - Thank You 1.(4). Since the previous scan, the patient has undergone surgery leaving a distorted and small right hemithorax. I put the comma here because you could start a new sentence with The Patient ..... 2.(5). The remainder of the

30. Math

The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 12 hour periods. Below is the sample: 142 171 125 91 140 125 97 125 162 142 125 117 89 125 140 128 From this data set, compute the sample mean, median, mode and

31. Math

One thousand raffle tickets are sold for \$1.00 each. One grand prize of \$400 and two consolation prizes of \$100 each will be awarded. Jeremy purchases one ticket. Find his expected value. ??

32. Math

I am supposed to find the pattern of a triangle of fractions, and find the next two rows. However, I can't seem to find the pattern. Could you please help me out? Row 1: 1 1 Row 2: 1 3/2 1 Row 3: 1 6/4 6/4 1 Row 4: 1 10/7 10/6 10/7 1 Row 5: 1 15/11 15/9

33. physics

refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

34. Media influences on American Culture

I just need to know how to start a final paper on a culturally influential,on television show, movie, song or website

35. Science

Chlorine gas was bubbled through a warm concentrated solution of potassium hydroxide. -write an equation of reaction that took place -describe how pure crystals potassium chlorate (5) may be obtained from the reaction above

36. ALEGEBRA

A STORE SOLD 18 SWEATSHIRTS. WHITE ONES COST \$9.95 AND YELLOW ONES COST \$11.50. IF \$202.35 WORTH OF SWEATSHIRTS WERE SOLD, HOW MANY OF EACH WERE SOLD?

37. algebra

I get it all done and it is wrong please help solve this thanks. Solve the compound inequality. 4x-3/86

38. algebra

can somebody help me out? am I doing this right? using the elimination method. y = 3x + 2 2y-6x=4 We have the solution for y so we use this to solve 2 (3x + 2) – 6x = 4 6x + 4 – 6x = 4 0x +4 = 4 Subtract 4 from both sides X=0 Now we use 0 for the x

39. Science

* P is a a black powder, which, when fused with a mixture of potassium hydroxide and potassium nitrate and then treated with water yields a green solution. The green solution turn purple when acidified. -identify P, the green solution and purple solution.

40. English

1. Each of the boys has his own computer. 2. Each of the boy has his own computer. 3. Each of the boys has its own computer. 4. Each boy has his own computer. (Is #2 wrong? Are all of them except #2 correct and the same?)

42. Math / Linear Equations

I was looking on a website that teaches linear algebra and it had this problem: 3x - 15 _______ =0 2x + 1 And it says the answer is: x = 5 But I don't understand how to get that answer so I hope someone can give me step by step directions for it.

43. General Education Statistics | MAT112

There are many ways people can invest their money. In mutual funds, the investor buys shares in a fund that buys investment instruments for the investor, commonly stocks, bonds, or fixed instrument investments. Investment fund managers commonly advertise

44. biology lab

-rate of photosyhthesis in presence of light intensity & CO2. ~A : sodium bicarbonate in darkness pH b4 xperiment-9 " @ 20 min- 8 " 60 min- 8 ~B: sodium bicarbonate in room light pH b4 xperiment-9 " @ 20 min-9 " 60 min-8 ~C: sodium bicarbonate 20 cm from

45. intermediate algebra

Solve using the elimination method. Show all work. If the system has no solution or an infinite number of solutions, state this. 3x+7y=77 -2x+7y=42

46. physics

refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

47. chemistry

what happens to the yield of sulphur trioxide?if you increase the pressure

48. Math

Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = I eat too much q = I'll exercise. I'll exercise if I eat too much. Is it q->p?? I do not know how to do the

49. Math

The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 4 hour periods. Below is the sample: 61 58 67 52 25 64 38 49 51 61 58 61 27 61 58 34 Construct a stem and leaf plot of the data. I have no idea ??

50. math

what is 8+10+2/12+4/9 in lowest term if possible

51. algebra

factor completely. Remember to look first for a common factor. if the polynomial is prime, state this. -4t^2+64

52. calculus

Find the indefinite integral of 1-tanx/1+tanx Dont know how to really approach this question. Should i use identities, or is there a power series i can use?

53. Math-probability

If the odds of winning a raffle are 2:240, what is the probability of winning? I think it's 2/240??

54. math

A family's plan to retire in 15 years and expect to need \$500,000. Determine how much they must invest at 7.6% compounded annually to accomplish their goal.

55. Chemistry

When oxygen expands from the liquid to gaseous state how much more volume does it occupy?

56. intermediate algebra

Solve uing the subtitution method. Show your work. If the system has no solution or an infinite number of solutions, stat this,3x-15y=-12 3x+24y=-12

57. Chemistry

A sample of 0.43 moles of a metal M reacts completely with excess chlorine to form 18.23 grams of MCl. How many moles of Cl are in the sample of MCl that forms?

58. acting?film

does anyone know a website that i can recover deleted photos for free when i download i see my pic go through then when i want my pictures to save them they say i have to pay does anyone know one that doesnt have to pay if i want to save them thanks

59. Maths

Prove that the identity element e of a group G is unique.

60. Chemistry

You are given 73 mL of CO2 at 0.69 atm. What volume (in mL) would the CO2 occupy at 0.67 atm if the temperature is maintained at a constant 25 °C.

61. history

What is the basic message of the Quran and when was it compiled.

62. math

John borowed 12,000 and agreed to repay the loan in six equal monthly payments plus interest of 1.5% per month on the unpaid balance. What is his total payment for the third month?

63. Physics

In the early morning hours of June 14, 2002, the Earth had a remarkably close encounter with an asteroid the size of a small city. The previously unknown asteroid, now designated 2002 MN, remained undetected until three days after it had passed the Earth.

64. statistics

A random sample of 10 observations is selected from the first normal population and 8 from the second normal population. For the hypothesis, H0: ¦Ì1 ¡Ü ¦Ì2, (.01 significance level), what is (are) the critical value(s)? (Population standard

65. Math

A bag contains 7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles. What is the chance of drawing a rainbow marble? If a rainbow marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a

66. Pronoun Pratice

I have written a paragraph about credit cards using at least five different pronouns. Could you please look over it and let me know if you see any errors, if my pronoun use is correct and if the sentences are complete. If you have any input about how a

67. Math

What are some examples of exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find amplitude, period, max, min etc., and combinations of transformation at home or in life in general?

68. Chemistry

Classify each of the following solutions as acidic, basic, or neutral based on the pH value. (a) pH = 8.0 (b) pH = 7.0 (c) pH = 3.5 (d) pH = 6.1

69. health

what is the legal status of the electronic signature in the EHR in TN

70. Pre-Calc

cot 19.8 degrees

71. Chemistry

If you have 1 sack of cotton (which is expected to float on water) and were asked to measure the volume, what will you do?

72. math

Translate to an equation p \$25 potted plants and s \$20 shrubs total \$300,graph the equation and use the graph to determine three different combination of potted plants and shrubs that total \$300?

73. history

What problems had to be overcome Africa's interior could be opened up to Westeren explorers? what helped to over come these problems?

74. physics

if the coefficient of kinetic friction between a 35-kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? what horizontal force is required uk is zero?

75. MULTIPLICATION

HOW MANY MILLIMETERS ARE THERE IN 8 CM

76. Chemistry

A sample of 50.0mL of argon is collected at 60*C and 820 torr. What does the sample weigh?

77. Calculus

Need help with this complex number equation. 8-3i/-4-6i=

78. Reimbursement Methodologies

Who is responisable for adjusting the Medicare DRG list and reimbursement rates annually?

79. Basic Operations and Bussiness Basics

A store owner buys supplys from a vender for \$8,450. The terms of sale are 2/10, n/30.What will be the net amount due if the owner pays the bill by the 10th day after he receives the supplies?

80. English

Charles "cut" the vegetables. Charles "chopped" the vegetables. Which sentence contains an active verb? How can you tell?

81. algebra

P is a point that is not on line m. How many lines can be drawn through P that form a 30 degree angle with line m?

82. math

please help I have no ideal how to do this convert the numeral to a numeral in base 10 8B3C0 16

83. algerbra

Find an equation of the line containing the given pair of points (1/6,1/3) and (5/6,3)

84. intermediate algebra

Write the substitution that could be used to make each equation quadratic in u. for w^1/3-3w^1/6+8=0,use w=

85. health

what are possible impact of not logging off or exit from the patient's record

86. technology

how can you protect your own eletronic siginture?

2445-765

88. communication

what sistuations lend themselves to evaluation

89. communication

how interest rates affect our purchasing decisions

90. Math

Your class decides to publish a calendar to raise money. The initial cost, regardless of the number of calendars printed, is \$900. After the initial cost, each calendar costs \$1.50 to produce. What is the minimum number of calendars your class must sell at

91. intermediate algebra

rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. [3}^-4 --- ua^2}