# Jo

Newest questions and responses by Jo
1. ## Math

.27 as fraction

2. ## Math

7. Find the mean, median, and mode of the data set. Explain which measure of central tendency best describes the data. pages of homework: 2 2 2 5 3 9 7 3 5 2 8. You are training for a marathon. On the first three days of training, you run for 2, 4, and 5

3. ## Math

Solve the quadratic equation 2x² - 4x + 1 = 0 How many solutions are in the equation 3x² + 4x - 7 = 0

4. ## Algebra

How do I do these?

5. ## Maths

Solve the quadratic equation 2x² - 4x + 1 = 0 How many solutions are in the equation 3x² + 4x - 7 = 0

6. ## Mathematics

Solve the quadratic equation 3x²=27 Solve the quadratic equation 2x² - 4x + 1 = 0

7. ## math

At Supermart an IPod that originally sold for 74.99 dollars was discounted 25 percent in April and then another 15 percent of the already discount price in May. At Bigmart that same IPod that originally sold for 74.99 dollars was discounted 15 percent in

8. ## Chemistry

25ml of sulfuric acid from a car battery was accurately diluted to 500ml. 25ml of the diluted solution was titrated with 0.206 mol/L sodium hydroxide. It required 38.8 ml. Calculate the Molarity of the original battery acid and it's concentration in grams

9. ## maths

Find an equation of the line that is perpendicular to the line whose equation is 2x – 5y = 3 and passes through (-2, 7). Last time i posted this, the answer was wrong

10. ## maths

Find an equation of the line that is perpendicular to the line whose equation is 2x – 5y = 3 and passes through (-2, 7).

11. ## maths

Write an equation of the line that is parallel to the equation 5x – 2y = 6, that passes through (4, -2).

12. ## geometry

a 20 foot latter will be used to paint the exterior of a house. The foot of the latter needs to be 4.5 feet from the base of the house. What is the maximum height the ladder will reach?

13. ## Math Combinatories

In the 2011 Canadian general election, 166 conservatives, 103 ndps, 34 liberals, 4 bloc quebecois, and 1 green were elected. If an all-party committee is to be formed consisting of 9 conservatives, 5 ndps, 2 liberals, 1 bloc quebecois, and 1 green, how

14. ## Math

Mr.Macho ate 125 hot dogs over a five day period. Each day he ate seven more hot dogs than on the previous day. How many hot dogs did he eat the first day.

15. ## Math

Mr.Macho ate 125 hot dogs over a five day period.Each day he ate seven more hot dogs than on the previous day. How many hot dogs did he eat the first day

16. ## Math

Mr.Macho ate 125 hot dogs over a five day period.Each day he ate seven more hot dogs than on the previous day. How many hot dogs did he eat the first day

17. ## Math

Use the slopes to determine if the line between the points (3, 5) and (-2, 7) is parallel, perpendicular or neither to a line that passes through the points (10,5) and (6, 15) a) Parallel b) Perpendicular c) Neither

18. ## Algebra

Damien is 6 years older than Emma. In 9 years the sum of their ages will be 82. How old is Damien now?

19. ## Physics

Okay, I'm really confused in general. My question says: "A solid piece of clear transparent material has an index of refraction of 1.61. If you place it into a clear transparent solution and it seems to disappear, approximately what is the index of the

20. ## algebra

An object is thrown straight up into the air at an initial vertical velocity of 32 feet per second from an initial height of 128 feet and is represented by the vertical motion model, h(t) = -16t^2 + 32t + 128. How much time does it take for the object to

21. ## algebra

How much of a solution that is 45% sulfuric acid needs to be mixed with a solution that is 90% sulfuric acid to produce 120 liters of a solution that is 60% sulfuric acid?

22. ## algebra

How much of a solution that is 45% sulfuric acid needs to be mixed with a solution that is 90% sulfuric acid to produce 120 liters of a solution that is 60% sulfuric acid?

23. ## Math

Felicia makes 1/2 gallon of fruit punch. She pour an equal amount into 8 glasses. What fraction of the fruit punch in each glass

24. ## math

-4+7x+4=8 direct vriation

25. ## math

the sum of two numbers is 20.one number is 3 time the other number . find the two numbers?

26. ## math

if the terminal side of an angle , theta, passes through the point (3,-5). find sin(theta)

27. ## math

TWO YEARS AGO, KIM INVESTED RMP AT HER ACCOUNT WHICH EARNS r% simple interest . after eighteen months , she noticed that the amount had become rm 10450 and today amount is rm 10600 . FIND THE VALUE OF p and r

28. ## Math

If Mrs. Jacobsen wants to buy the item with the unit price , what item should she order and how many of that item should she order?

29. ## Math (statistics)

Suppose an employee starts working after completing her MBA at age 30 at a starting salary of \$50,000. She expects an annual salary increase to be at minimum 1%, at maximum 5%, with a uniform distribution. Her retirement plan requires that she contribute

30. ## Math

How to find the transformations of these graphs of equations? 1. y=(x+2)^2-3 2. y=3x^2-6 3. y=-2(x-4)^2+5 Please teach me..

31. ## Physics

Two parallel straight wires are 1 meter apart. Each wire carries a current of 2 Amperes in the same direction. What is the resultant magnetic field produced by both wires at a point: 2) 1/4 of the distance between them I don't really understand what 2 is

32. ## Physical Educationcal Educationcal

What is the role of 1mile running? ( like important things, teaching points ) I need to find for P.E. class.. Please introduce me some good websites

33. ## Art

Hundertwasser who was born in December15, 1928 in Austria and died in February19, 2000. What do you think about characteristics of his work?

34. ## English

If you suddenly lost everything, what would you miss most?

35. ## P.E.

What is Conditioning coach and Conditioning activities..?

36. ## English Writing

Please bring something interesting to share with the class tomorrow. It can be anything that you have seen/heard/read recently in English (an article, a song, a new phrase, a short video, a picture of a sign you saw, etc). It needs to be appropriate of

37. ## Phyics

A 56 kg astronaut stands on a bathroom scale inside a rotating circular space station. The radius is 250 m and the bathroom scale reads 42 kg At what speed does the space station does the floor rotate

38. ## calculus

A running circuit is to be constructed in the shape of a rectangle with two semicircles attached at the east and west ends of the path (see figure). A picnic area will be set in the center of the circuit. If we want the total length of the circuit to be

39. ## calculus

A printed page is to have 1 in. margin on all sides. The page should contain 80 sq. in. of type. What dimensions of the page will minimize the area of the page while still meeting the other requirements?

40. ## Science

A piece of lead at 100 degrees celsius has a mass of 500 grams. It is placed in a 200 grams of water at 20 degrees celsius that is contained in an aluminum caloriemeter with a mass of 400 grams. If the final temperature of lead, water and caloriemeter is

41. ## Maths

Solve the problem - How many three digit numbers do not contain a five? Show evidence of solving the problem in a systematic way.

42. ## Maths

Solve the problem - How many three digit numbers do not contain a five? Show evidence of solving the problem in a systematic way.

43. ## Math

Week 1 42hours(including 4 hrs sick leave,6 hrs travel) Week2 46 hours(including 5 hrs travel) What percentage of the recorded time did the worker spend traveling

44. ## social studies

How are interest rates and wages similar? A. Both rise due to inflation. B. both are types of prices. C. Both relate to the cost of borrowing. D. Both are payment for work done. i feel like it is D or b? please help

45. ## social studies

How are interest rates and wages similar? A. Both rise due to inflation. B. both are types of prices. C. Both relate to the cost of borrowing. D. Both are payment for work done. i feel like it is D or b?

46. ## Math

How do you simplify this expression? 5(x+10)+x 6x+50 is the answer?

47. ## math

7x/8 = 21 i am kind of confused on this

48. ## math

How do you simplify this expression? -12 / 3 x (-8+(-4)^2 - 6) +2 I got -8+2. Is this right?

49. ## Math

The difference between 2 numbers is 14.When the greater number is divided by the lesser, the quotient is 2 and the remainder is 5.What are the numbers?

50. ## math

**In the Figure KE is parallel to LF which is parallel to MG which is parallel to NH etc. Also DK: KL= 2:1 DL:LM = 2:1 DM: MN=2:1 etc If KE = 2 cm , calculate the length of the 10th parallel line,rounded off to one decimal place.(N.B NH is the 4th parallel

51. ## Math

An Equilateral Triangle Of Side 20cm Is Inscribed In A Circle.Calculate The Distance Of A Side Of The Triangle From the Centre Of The Circle.

52. ## Math

a jar contains 26 fluid ounces of spaghetti sauce, how many cups of spaghetti sauce do 4 jars contain?

53. ## Chemistry

A chemist reacted 0.05 moles of sodium with water to form 50cm3 of sodium hydroxide solution. Na + H2O -- NaOH + H2 (unbalanced) What mass of sodium was reacted?

54. ## geometry

What is the ratio of the area of sector AOB to the area of sector COD? 1/3,1/4,1/9,3/8

55. ## Physics

A 25 kg box is dragged across a floor by a rope that makes an angle of 60 degrees with the horizontal. The tension in the rope is 100 N while the box is dragged 15 m. A) how much work is done by tension? B) how much work is done by gravity?

56. ## math

A ball is launched from a slingshot. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds. After 1 second, the ball is 148 feet in the air, after 2 seconds the ball is 272 feet in the air. Find the height in feet of

57. ## math

The large red equilateral triangle has sides of 8x units. The midpoints of the red triangle are joined to form the blue triangle. The midpoints of the blue triangle ate joined to form the green triangle. The process of joining midpoints to form new

58. ## math

The large red equilateral triangle has sides of 8x units. The midpoints of the red triangle are joined to form the blue triangle. The midpoints of the blue triangle ate joined to form the green triangle. The process of joining midpoints to form new

59. ## Math

Construct the 2 x 3 matrix B=[b_ij] where b_ij= (-1)^i+j(i^2-2j)

60. ## Math

Express log z+ 2 log y - 3log x as a single logarithm.

61. ## ENGLISH

1. Joseph ate dessert before he ate dinner. --> Are the capitalized words a phrase or a clause? Answer: Clause. 2. She left early in the morning. --> Are the capitalized words a phrase or a clause? Answer: Phase. IS THIS CORRECT?

62. ## english

Define verb tense. Write a sentence that has a simple present tense verb. Rewrite it, changing the verb to simple past tense, simple future tense, each of the perfect tenses, and each of the progressive tenses.

63. ## math

if you spend 4/7 of your money and have \$15 left how much did you spend

64. ## Math

A circular pool 10m wide in diameter has a deck 2m wid around it. What is the area of the deck?

65. ## Psychology

An extremely loud noise awakens you; you emerge from sleep confused and do not remember the noise. You were most likely in which stage of sleep. a. Stage 1 b. Stage 2 c. REM d. Stage 4 e. Twilight Sleep

66. ## Physics

You testify as an expert witness in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (Fig. 1). You find that the slope of the hill is Ɵ = 120 , that the cars were

67. ## algebra

why is 0.57 considered a rational number?

68. ## Math

Do the following points represent a point on the graph of y=x 4? (0.-4) (5,-1)

69. ## Math

the half life of a radioactive substance is one day. You have 100 grams. how much of the substance would be left after a week?

70. ## Chemistry

Calculate the molarity of a solution made by adding 33.4 mL of concentrated nitric acid (70.4 % by mass, density 1.42 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 2000 mL of solution. (It is important to add

71. ## Chemistry

How many grams of potassium nitrate (KNO3) are required to produce 536 g of potassium nitrite (KNO2) according to the equation below? *I've tried this question for so long and I get so many different answers in the end so please help.

A proportionate tax consumes a determinate apportionment of one’s monetary flow.

73. ## Physical Chemistry

If a 30g piece of ice at -5C is immersed in 125mL of water at 25C in an insulated container... A. Determine the final temperature and final composition of the system B. Determine the entropy changes of the ice and the water and the overall entropy change

74. ## math - relations and functions

What is mean , Write a set of 10 ordered pairs that represent a function?

75. ## Physics

An optical fiber is made of a clear plastic with index of refraction n=1.6, For what angles with the surface the light remain contained within the plastic guide?

76. ## physics

A stone is thrown into water pond forming 10 waves in 5 seconds. The diameter of the first crest is 13 m and the diameter of the last crest is 4m. Find a.the periodic time b.the frequency c.the wave length d.the wave velocity

77. ## math

Classic Furniture purchases dining room sets with an invoice date of September 27, and terms of sale of 3/10, n/60. What is the net date? A) October 17 B) October 22 C) November 2 D) November 26

78. ## Mechanics

A 1-kg ball in the air has an initial velocity vo = [ 20 ] i + [ -30 ] j m/s. It falls for a total time of 1 s. Assume that positive x-values are to the right and positive y-values are upward. A)What is the impulse or change in momentum Delta p of the

79. ## physics

The acceleration of gravity is 9.8 m/s 2 . What is the magnitude of the total force on a(n) 87 kg driver by the dragster he operates as it accelerates horizontally along a straight line from rest to 41 m/s in 5.3 s? Answer in units of kN

80. ## POL 201

_______ is core to the notion of “life, liberty and the pursuit of happiness” in the Declaration of Independence. (Points : 1) Human agency Pure unfettered liberty the idea that government may never restrict citizens’ liberty the concept of American

81. ## POL 201

If Americans were said to have a positive liberty to work, then the government (Points : 1) may not prevent one from working. is required to provide jobs to those that cannot find jobs. may never pursue a policy that leads to unemployment. must prohibit

82. ## ashford

Those who attended the Constitutional Convention believed that (Points : 1) England was an evil society. America had made a great mistake in fighting the revolutionary war. British institutions of government were good but they became corrupt. America would

83. ## math

In three successive years the price of the common shares of Bedrock Resources Ltd. fell 40%, 60%, and 70% ending the third year at 50 cents. How much (in dollars and cents) did the share price drop in the second year?

84. ## physics

A box slides down a 28° ramp with an acceleration of 0.98 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

85. ## chemistry

what could cause the difference in the actual number of mole and the expected number of mole in copper oxide?

86. ## chemistry

what is the molar ratio of 0.114 copper to 0.116 oxygen? Then how do you make an empirical formula from this information?

87. ## chemistry

in a empirical formula lab how do you calculate the number of moles of Cu in 0.0114 moles of CuSo4*H2O? Thanks

88. ## calculus

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x+y=4,x=5−(y−1) 2 ;

89. ## physics

A hunter wishes to cross a river that is 1.0 km wide and that flows with a speed of 4.9 km/h. The hunter uses a small powerboat that moves at a maximum speed of 9.6 km/h with respect to the water. What is the minimum time necessary for crossing?

90. ## math

sum of 3 number is equal 39 , the second number is half of third number ,and the first number less than third number by 1,the result must be 6 degit ?

91. ## geometry

Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height if the second rectangle is 9 inches, how much larger is the second rectangle's area?

92. ## Statistics

A COMMITTEE OF 5 PEOPLE IS TO BE FORMED FROM 15 PARENTS AND 10 teachers. Find the probability that the committee will consist of at least one parent.

93. ## chemistry

which complementary functional group from dopamine would need to be present in the receptor for the interaction to occur.

94. ## chem

which complementary functional group from dopamine would need to be present in the receptor for the interaction to occur.

95. ## chemistry

i need to find the enthalpy for COF2 F2 (g) + CO (g) --> COF2 (g) i found -507 but i am not sure if it is correct

96. ## science

i need to find the enthalpy for COF2 F2 (g) + CO (g) --> COF2 (g) i found -507 but i am not sure if it is correct

97. ## research

what is the research problem discussed in the article: UNDER SURVEILLANCE: AN EMPIRICAL TEST OF THE EFFECTIVENESS AND CONSEQUENCES OF ELECTRONIC MONITORING? I have read this and I am totally lost. Please help

98. ## Math

Given a total profit of p(x) = 1.4x-0.02x^2-20 let x represent a number of days and find profit achieved and when that profit is made

99. ## criminal justice

explain the relationship between theory and hypothesis development and testing