# Questions Asked onJanuary 1, 2013

1. ## math

how would i solve this function y=4x

2. ## Algebra

True or False: If an agebraic expression calls for Y=8, that means that you will use the number 8 to replace the letter Y in order to solve the expression?

3. ## history

in the 1920s, literature played a huge roll in people's lives. however, when the great depression struck in 1929, people were unable to purchase literature and books were focused on the downfall of society and how the glitz and glamour of the 1920s

4. ## math

Which of the following equations is true? 1. (3 + 4)2 + 23 = 57 2. (3 + 4)2 + 23 = 53

5. ## calculus

solve the following logarithmic equation. Be sure to reject any value of x that is not in the domain of orginal expression. then in the solution set round to two decimals places. Inx=8 I get e^8 But am having a hard time with rounding two decimal places.

6. ## calculus

solve the following exponential equation 9^x=6 I get In6/In9 what is the answer approximated three decimal places?

7. ## chemistry

Calculate the degree of polymerization n of polystyrene with a molecular weight of 3.091*10^6 g/mol.

8. ## chemistry

What is the value of the degree of polymerization n of isotactic PB with a molecular weight of 3.091×105 g/mol?

9. ## chemistry

One chirality of CH3CHClCOOH is shown below. Identify the image(s) below that exhibit the opposite chirality. Select all that apply.

10. ## math

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the product of vectors p and q?

11. ## Advanced Statistics

What is Conceptual Framework...?

12. ## maths

find the value of k on which the line (k-3)-(4-k)^2*g+k^2-k+6=0.

13. ## maths

a horse is tied to a pole by a rope if the horse moves along a circular path keeping the rope tight and describe 176 m when it has traced out 72degree at the pole find the length of the rope

14. ## maths

two circles of radii 10 cm and 17 cm intersect at two points and distance between their centers is 21 cm.find length of common chord

15. ## maths

'A ' person gives gift to another person 'B 'on an occasion, 'B ' gives the same gift to 'C ', and so on. What is the probability that the gift returns to the person 'A ' again

16. ## the science of the mind (psychology)

2. which of the following statements regarding depth perception is true? a. texture gradient is a monocular cue b.experience teaches us to perceive relative size as an indicator of the color of an object c.motion parallax is detected because we perceive

17. ## maths

a trader marks his goods 20% above the CP .He then sells them at a discount of 20% .If his CP is 550 what is his gain or loss and its percentage

18. ## triangle inequality - altitudes help plz

hi guys ive be struggling on this problem for a couple of days, so please help if you can Problem:Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive integer? Thanks in advance

19. ## math

an element has a BCC structure with cell edge of 288pm. the density of the element is 7.2g/cm3. how many atom are present in 208g of the element?

20. ## calculus

solve the logarithmic equation. be sure to reject any value of x that is not in the domain of the orginal logarithmic expression. In square root x+7=2 what is the exact solution? a.)the solution set is ? b.)there are infinitely many solutions c.)there is

21. ## calculus

solve the following exponential equation. 8^x=3 what is the exact answer? a. x= ? b. there is no solution what is the answer approximated to 3 decimal places? a. x= ? b. there is no solution

22. ## physics

derivation of prism formula

23. ## calculus

solve the equation Inx+In(x+4)=3 x= ?

24. ## calculus

solve the following equation Log1/3(x2+x)-log1/3(x2-x)=2 the 1/3 should be lowered and the (x^2-x) should be higher. Can someone tell me what tools to use to make them like this when posting? x= ?

25. ## ENGLISH HELP!!!

A feature article about a plane crash would be more likely than a hard news article to include ? A)the date, time, and location of the crash. B)a profile of one of the survivors of the crash. C)statistics about other crashes involving the same airline.

26. ## Maths

The circumference of the base of a cylindrical oil drum is 204cm. Calculate the diameter of the drum.

27. ## calculus

solve the logarithmic equation. Be sure to reject any value of x that is not in the domain. In square root x+7=1 x= ? What is the decimal approximation to the solution? x= ?

28. ## Physics

On a frictionless table, a 3kg block moving 4m/s to the right collides with an 8kg block moving 1.5m/s to the left. If the blocks stick together, what is the final velocity? How much mechanical energy is dissipate in the collision?

29. ## Chemistry 1 HN

Find the mass of iron heated to 85 degrees celcius that was added to 54.0 grams of water. The temperature of the water changed from 20 degrees celcius to 60 degrees celcius. The specific heat of the iron is 0.045 J/g degrees celcius

30. ## Chemistry I HN

If 720.0 grams of steam at 400.0 degrees Celsius absorbs 800.0 kJ of energy, what will be its increase in temperature?

31. ## Chemisty I HN

How much heat (in kJ) is given when 85.0 grams of lead cools from 200.0 degrees Celsius to 10.0 degrees Celsius? (Cp of lead = 0.129 J/g)

32. ## Physics

You slide your friend with a mass of 65 kg out of the way as they are blocking the exit and keeping you from escaping from physics class where you have been tormented by problems for the last hour and a half. The coefficient of kinetic friction between the

33. ## Accounting

Hi, When delivery eqipment is purchased on account, the transaction to be recorded by the purchaser inclues debiting: A: Delivery Equip & crediting AP B: Delivery Equip & crediting Cash C: Delivery Expense & crediting AP D: Delivery Expense & crediting

34. ## physics

calculate the initial acceleration of a rocket of mass 3*10^6kg if the rocket is sitting on its launch pad with weight 3*10N and upward thrust of 3.5*10^7

35. ## calculus

solve the equation. Inx+In(x+8)=3

36. ## calculus

solve the following equation. log 1/6 (x^2+x)- log 1/6 (x^2-x)=2 **the 1/6 is lowered on both sides and the (x^2+x) and (x^2-x) should be higher on both sides**

37. ## physics

a ball of mass 4 kg falls to the floor; it lands with a speed of 6 m/s. it bounces off with the same speed. show that its momentum has changed by 48 kg m/s

38. ## calculus

solve the following exponential equation. 5^x=4 a. what is the exact answer? **I think it is In4/In5 b. what is the answer approximated to 3 decimal places.

39. ## for Knights

have been looking at your post ... http://www.jiskha.com/display.cgi?id=1357047578 interesting question... let the altitude of 12 hit base a let the altitude of 14 hit base b then (1/2)(12)a = (1/2)(14)b 6a = 7b a = 7b/6 let the third side be c and its

40. ## calculus

solve the exponential equation. Express the solution in terms of natural logarithms. e^x=9.2 a. whats the solution in terms of natural logarithms? **is the answer e^9.2 or just e^9 b. type a decimal rounded to 3 decimal places.

41. ## History

Should environmental policy focus on developing more oil resources or on developing renewable energy sources? Or, is there another, better way to frame the discussion?

42. ## math

What is the order from least to greatest of the fractions 4/8, 1/4, 2/6, 2/3?

43. ## Physics

1. Suspend the meter stick by a string from its center. 2. Notice carefully where it balances. It probably will not balance exactly at 50 cm. All distances must be measured to this point (called the fulcrum). 3. Hang a 200 g mass on one side and a 50 g

44. ## Calculus

Is this statment true? Please explain. At a relative extrema, f'(x) = 0

asked by Lost One
45. ## math

A right triangular field has its hypotenuse is fifty cm and one side is forty cm find the aarea of it triangle

46. ## Calculus

Find the extreme value(s) of the function f(x)=1/(1-x^2). I tried, and for the first derivative I got -1/(2*sqrt((1-x^2)^3)). I then found critical values of the function to be -1 and 1. However, the textbook says that the minimum value is 1 at f(0), and I

47. ## writing

do you think that life on earth could become this difficult during your life time?what factor could cause to take place ?a story about that shows what life might be like in the world?

48. ## math

Two adjacent sides of a parallelogram are four cm and five cm find the perimeter of the parallelogram

49. ## Trigonometry

1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two decimal places. 6.Prove that tan y cos^2 y + sin^2y/sin y = cos y + sin y 10.Prove that 1+tanθ/1-tanθ = sec^2θ+2tanθ/1-tan^2θ 17.Prove that sin^2w-cos^2w/tan w sin w + cos w tan w =

50. ## math

How to multiply both the sides with two and add them i mean it is not possible

51. ## physics

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 16 m/s. The cliff is h = 60 m above the water's surface, as shown below. How long does it take for the stone to fall to the water? With what speed does it

52. ## trigonometry

14. Solve sin 2x + sin x = 0 for 0 ≤ x ≤ 2π. 21. Write 2sin37°sin26° as a sum (or difference).

53. ## science

The output of a laser is 3.000 W when pumped at 7 times the threshold. The optical mode in the laser is a cylinder with a diameter of 0.8 mm, and the output mirror transmission is 0.25 %. Determine the saturation intensity of the laser transition

54. ## physics

A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 4.2 m waterfall. If the spy's speed is 20 m/s and the officials' speed is 24

55. ## physics

Mode spacing and gain coefficient: A Nd microchip laser has an index of refraction 1.78 and a cavity length of 3.20 mm. Mirrors of reflectivity 0.997 and 0.975 are mounted directly on the faces of the chip. The emission lineshape of the laser transition

56. ## math

1,1,2.3,5....... what can be the general term for this?

57. ## physics

A shell is fired from the ground with an initial speed of 1.54 103 m/s at an initial angle of 46° to the horizontal. (a) Neglecting air resistance, find the shell's horizontal range.

58. ## maths-calculus

mean value theorem prove sq root 9.1 is less than or equal to 3+1/60

59. ## Algebra

What is the value of 20x when x = 10. (Thank you in advance and Happy New Year! :)

60. ## Algebra

What is the value of 3a when a = `4. (Thank you in advance & Happy New Year!)

61. ## Algebra

What is the evaluation of: a - 13 when a = 33. Thanks & Happy New Year :)

62. ## Chemistry..

Can you check my answer?When sodium chloride reacts with silver nitrate, silver chloride precipitates. What mass of AgCl is produced from 75.0 g AgNO3? My answer: 63.3g AgCl

63. ## Math.....

This is a riddle: It is night time in your bedroom and the light has broken. You are getting dressed and need a pair of socks. You have got 10 red, 8 white and 12 grey socks in a drawer- how many do you have to pull out in the dark before you know you have

64. ## math help!

48,36,27,81/4........... general term?

65. ## math

how can i find the product of this number 3 x 16 by breaking it ?

66. ## Algebra

Simplify: 2 + 3 . 10 Devided by 5 . 3 - 9 (Thanks and Happy New Year!)

67. ## algebra

how do i simplify 16^1/2 in steps and explanation?

68. ## math

A client comes to you for investment advice on his \$500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his

asked by yolanda johnson
69. ## calculus

for the given functions f and g, find the following and state the domain of each. f(x)=square root x; g(x)=5x-1 a. (f*g)(x)= ? what is the domain of f*g? b. (f/g)(x)=? what is the domain of f/g? please show work

70. ## math

A client comes to you for investment advice on his \$500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his

asked by yolanda johnson
71. ## Physics

you are riding your bike on a path. you see a fallen tree blocking your way 42 meters ahead. if the coeffiient of friction between your bikes tires ad the ground is .36 and you are traveling at 50km/hr how much stopping distance is required? the total mass

72. ## math

find the equation of a line that is parallel to the line x= -1 and contains the point (-7,5) the equation of the parallel line is ? *type an equation*

73. ## Physics

a store owner wishes to hang a sign weighinh 750N so that cable A attached to the store makes a 30 degree angle from the vertical wall. cable B is attached horizontally to an ajoining building. calculate the necessary tension on cable B |.\ |30\ |...\ A

74. ## calculus

Find the distance d(P1,P2)between the points P1 and P2. P1=(-5,2) P2=(2,1) d(P1,P2)=? *all the 1's and 2's are to be lower down.* Please show work

75. ## physics

If the hockey puck lies on the ice and is struck by a hockey stick with a force of 2.60e+03 N, what is the acceleration of the hockey puck

76. ## geometry

What is the area of a triangle if the base is 12 inches and the height is 18 inches?

77. ## calculus

Find the midpoint of the line segment joining the points P1 and P2 P1=(-1,5); P2=(2,0) m=(x,y)=? type an ordered pair Please show work

78. ## Math inequalities

18-2x>6x-6 I added +2x to each side 18>8x-6 then add 6 to both sides 24>8x 24/8>8x/8 3>x answer x

79. ## math

the function f is defined as the follows f(x)={x+6 if -5 less than or equal to x < 1 {9 if x = 1 {-x+5 if x > 1 a. find the domain of the function f is? b. locate any intercepts; if any please show work

80. ## chemistry

8.058g x 10-2 kg of washing soda na2co3 10h20 is dissolved in water to obtain 1L of a solution of density 1077.2kg/m3. Calculate the molarity, molality and mole fraction of na2c03 in the solution? who helps

81. ## Mock Trial

Hi all, I belong to a education group, and we practice Mock Trial. Where can I find a video of a real trial going on so I can learn from it? Thanks all and Happy New Year!

82. ## Financial management

ABC Construction and Leasing Company are interested in investing in the residential real estate market due to a relatively low interest rate environment. The Company appointed you to be in charge of the project feasibility study. You have just visited a

83. ## math

1+2+3+...+100 how to find the sum of it.

84. ## us history

Based on this account, what would historians be most likely to disagree on regarding the story of the Tuscarora? the history of the Iroquois nation the duration of the Tuscarora War the exact cause of the Tuscarora War the location of the Tuscarora tribal

85. ## Math

What is the sequence to this 2, 10, 10

asked by Kevin Yang
86. ## Chemistry

Pharmacists sell tablets containing magnesium hydroxide, Mg(OH)2, to combat indigestion. A student carried out an investigation to find the percentage by mass of Mg(OH)2 in an indigestion tablet. The student reacted the tablet with dilute hydrochloric

87. ## Math

Total goals is 253, how many did each top player score. Erin scored the least. Macy 4 times as many as Erin. Carly scored 2 less than Macy. Shelly scored one half as many goals as Carly. Molly scored 1more than Macy.

88. ## Geometry

in triangle ABC, BD bisects

89. ## American Government

True or False: The U.S. "Superior" Court is the Nation's most powerful court? (is Superior and Supreme one in the same?)

90. ## physics

what is the magnitude of the resultant of a 6.0n force acting vertically upward and a 4.0n force acting horizontally

91. ## Asworth college

which of the sentences uses modifiers correctly? a. Kurt and his hockey teamm ates nearly cooked two hundred pancakes for the breakfast fundraising event. b. Rudolph enjoys eating curries from the indian delicatessen with a lot of spices. C. on the phone

92. ## math

t11=19 and t17=61.then what will be S12? arithmetic series question

93. ## math

answer the following for the given quadratic function. f(x)=x^2+x^2-8 a. what is the vertex (h,k) of f? (h,k)=? simplify your answer and type the answer in an ordered pair b. what is the axis of symmetry?

94. ## College

Tmrw my exm plz give me soon reply ,about Measurment of viscosity and viscosity.

asked by Simran kaur
95. ## physics

If an object is thrown in an upward direction from the top of a building 160 ft. high at an initial speed of 21.82 mi/h., what is its final speed when it hits the ground?(Disregard wind resistance. Round answer according to significant figures and do not

96. ## College

Difference between analytical and other instrumentation ? I want atleast 10points

asked by Simran kaur
97. ## physics student

A tank holds 2.85 L of oxygen at 22.1 Celsius and 235 atm. (A) how many moles of gas does the tank contain? (B) what is the average kinetic energy per molecule ? the answer in the text book is (a) 27.7 moles (b) 2.381x10^7pa i just want the formula so i

asked by physics student need help
98. ## math

which integer is equal to the product of -7 and the sum of 5 and -1?

99. ## Chemistry

5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value correct? Explain why or why not.

100. ## Chemistry

5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value correct? Explain why or why not.

101. ## Math

Total goals is 253, how many did each top player score. Erin scored the least. Macy 4 times as many as Erin. Carly scored 2 less than Macy. Shelly scored one half as many goals as Carly. Molly scored 1more than Macy.

102. ## math

bricks are stacked in 20 rows such that each row has a fixed number of bricks more than the row above it. the top row has 5 bricks and the bottom row 62 bricks. how many bricks are in the stack?

103. ## Art

How can lines in a painting lead your eyes

104. ## Medical Biology

Which of the following condition could result from years of smoking? a) tuberculosis b) emphysema c) empyema d) atelectasis

105. ## 7th grade social studies

1. To pinpoint the absolute location of a place, geographers use (1 point) nearby landmarks. the Atlantic and Pacific oceans. the North and South poles. latitude and longitude. 2. What does the theme of movement help geographers to understand? (1 point) a

106. ## Math

Total goals is 253, how many did each top player score. Erin scored the least. Macy 4 times as many as Erin. Carly scored 2 less than Macy. Shelly scored one half as many goals as Carly. Molly scored 1more than Macy.

107. ## math

Madison spent 5/8 of her savings on a microwave oven & a refrigerator. She used 4/7 of the amount she spent to buy the refrigerator. The refrigerator cost \$280 more than the microwave oven. How much savings did Madison start with?

108. ## algebra

What are the steps to figuring out x and y in 3x + 5y = 39.89 and what does x and y equal in the end?

109. ## Math

Two isosceles triangles have perimeters of 8 and 15 centimeters, respectively. They have the same base length, but the legs (the non base sides) of the larger triangle are twice as long as the legs of the smaller triangle. For each triangle, what is the

110. ## math

division with fraction 2/7 divided by 3/10

111. ## math

At a festival, 2/7 of the number of girls was equal to 3/5 of the number of boys. There were 165 fewer boys than girls. How many children were at the festival in all?

112. ## earth science

How does the wavelength of the infrared portion of the electromagnetic spectrum differ from that of the visible portion of the spectrum?

113. ## stats

if i have a sample size of 200, 16% are poor, what is my mean and standard deviation. my answers do not make any sense

114. ## Social Studies

A study of the causes of the American Revolution of 1776, the French Revolution of 1789, and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when?

115. ## Pre-Cal

Solve the following logarithmic equation. Exact words only: log 3(x+4) = 2+log3(x-20) the 3 in the part of log (3)should be lower just didn't know how to type it in here

116. ## science

Describe and show your calculations on how you would prepare 1.00L of a 0.50M solution of each of the following a.) HCl from "concentrated" (12M) reagent. b.) Sodium Carbonate from the pure solid PLEASE SO LOST(explanation of why you did of what woulp help

117. ## history

i need a hypothesis for the 19th amendment

118. ## math

solve This seems pretty easy but I always want a second eye for my work. x+1>6 -1 to each side x>5 Is this right?

119. ## math

interest is 67.50 and rate is 3%, and time is 3 years. What is the principal?

120. ## math

interest is \$1104, principal is \$4600, and time is 4 yrs. What is rate?

121. ## math

sam has purchased 4 sections of fences that measure 22 1/2 feet long.he needs 2 sections that measure 19 3/4 for the length and 2 sections that measure 15 3/4 feet each for the width how much fence will he have left.

122. ## MATH

If I deposit \$3500.00 into an account with a annual rate of 4.5 compounded monthly how long would it to reach \$5000.00

123. ## math

the 10th term is 34 of arithmetic series and the sum of the 20th term is 710.what is the 25th term?

124. ## Can you please revise this?

Dear Wiesel, It is a huge pleasure for me to write this letter to you. My name is name, a current high school senior at school name located in the city of city's name. I want you to know that I am a very faithful fan of yours. I enjoy your writings,

125. ## programming

what will be the c++ source code of finding the largest value among the N numbers? translate the algorithm: 1. the largest number is: 2. the smallest number is: 3. display all the numbers inputted: 4. show the final output.