# Questions Asked onFebruary 15, 2015

1. ## calc

lim x → ∞ tan−1(x7 − x9)

2. ## math

Given that log4 = 0.6021 and log6 = 0.7782, without using mathematical tables or calculate, evaluate log0.096.

3. ## Physics Circular Motion

A 0.75-kg ball is attached to a 1.0-m rope and whirled in a vertical circle. The rope will break when the tension exceeds 450 N. What is the maximum speed the ball can have at the bottom of the circle without breaking the rope?

4. ## mathematics

solve this probability :a box contains 10 marble, seven of which are black and three are red.three marbles are drawn,one after the other without replacement. find the probability of choosing 1 red,1 black and 1 red marble. in that order

5. ## life orientation

Show the link between intrapersonal conflict and initiating relationship

6. ## physics

Calculate the extension that would be produced by a 20N force if 15N extends a spring by 3cm

7. ## Physics Circular Motion

A satellite in orbit around the earth has a period of one hour. An identical satellite is placed in an orbit having a radius that is nine times larger than that of the first satellite. What is the period of the second satellite?

8. ## statistics

if you earned a 17 on a quiz what would your score indicate the best performance a. x=15 and s=2.4 b. x=15 and s=2.1 c. x=17 and s=2.4 d. x=17 and s=2.1

9. ## chemistry

Calculate the pH of a saturated solution of Sr(OH)2. The Ksp for Sr(OH)2 is 3.2x10^-4.

10. ## Math

A drawer contains 20 black socks and 20 white socks. If the light is off and you reach into the draw to get your socks, what is the minimum number of socks you must pull out in order to be sure that you have a matching pair?

11. ## Algebra 1

Which method is the best method for solving the equation 8x^2-123x+3=0 square roots factoring graphing quadratic formula my answer is quadratic formula

12. ## Calculus

determine the absolute extreme values of the function f(x)=sinx-cosx+6 on the interval 0

13. ## Algebra

Factor: -3x^2 - 18x + 15

14. ## Chemistry

Calculate the molar extinction coefficients for carotene and chlorophyll using the peaks of highest absorption and Beer’s law.Show your calculations.basically solve for e A = ebc Carotene (Yellow) = Highest peak 450 nm and 0.455 absorption A = ebc 0.455

15. ## math

The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA.

16. ## physics

A sprinter in a race can run 100m in 11.4 seconds. If it takes him 4.2 seconds to accelerate to top speed, what is the magnitude of his acceleration? Assume that he stays at his top speed from 4.2 seconds till the end. I do not understand which kinematics

17. ## physics

As a protest against the umpire’s calls, a baseball pitcher throws a ball straight up into the air at a speed of 20.4 m/s. In the process, he moves his hand through a distance of 1.57 m. The acceleration of gravity is 9.8 m/s 2 . If the ball has a mass

18. ## life orientation

identify six symptoms of intrapersonal conflict in a person.

19. ## Algebra 1

How many solutions are there form 5x^2+7x-4=0? my answer is 3

20. ## ma

A point R divides a line PQ internally in the ration 3:4. Another point S, divides the line PR externally in the ration 5:2. Given that PQ = 8cm, calculate the length of RS

21. ## Pre-Algebra

A 5-foot parking meter has a 4-foot shadow from a nearby streetlight. The streetlight is 15 feet tall. How far is the streetlight from the parking meter? Don't want answer, just want formula for figuring out

22. ## Chemistry

What is the percent by mass of NaHCO3 and KCl in the mixture.

23. ## Math

a rectangular room on a blueprints is 2 inches wide and 5 inches longif the scale of the blueprints to the actual room is 1:72,what is the width of the room?

24. ## calculus

Find limit of 2x+1-cosx/3x as x approaches 0?

25. ## Algebra 1

Which kind of function best models the set of data points: -1,22 0,6 1,-10 2,-26 and 3,-42? linear quadratic exponential non e of the above my answer is linear

26. ## physics

When you lift a bowling ball with a force of 60.7 N, the ball accelerates upward with an acceleration a. If you lift with a force of 69.3 N, the ball's acceleration is 1.99a. Calculate the weight of the bowling ball.

27. ## chemistry

A student collects gas over water after reacting sodium bicarbonate with hydrochloric acid. The watwr in the collector is the same both inside and out. The partial pressure of the carbon dioxide gas collected is 740 atm.if the temperature at the time of

28. ## MATHS(sum of series)

1).Find the sum of the n terms of the series Sn=1^2 + 3^2 +5^2+...+(2n-1)^2 2).Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... 3) Sum to n terms,the series 1.3.5 + 2.4.6 + 3.5.7 +..

29. ## physics

A sledge weighing 30 kg is pulled with a rope that makes 60° with the horizontal. The tension on the rope is constant and it is 37N. The sledge is moved horizontally for 13 m. There is no friction and cos(60°)=0.5 a) What is the work done by the tension

30. ## Finance

After deciding to buy a new car, you can either lease the car or purchase it on a 3-year loan. The car costs \$32,000. The lease offer is for \$450/month for 36 months, with only \$99 due up front. If you buy the car with a 3-year loan, the APR is 7% with

31. ## algerbra

how to set up this problem? your new car's gas tank holds 12 gallons of gas, and you get 45miles/gallon. you travel 35miles and run out of gas. how much gas was in your tank when you left?

32. ## math

Joe drank 4 liters of water on Monday and 4 deciliters of water on Tuesday. How much more water did he drink on Monday than on Tuesday?

33. ## math

If a United States dollar is worth \$1.41 in Canadian money, how much is \$100 in Canadian money worth in the united state money, to the nearest cent

34. ## Computer Science

"write a program that asks the user to enter the price of an item and rate of discount. If discount is 9%, display the final cost of item" What message do I display if its not 9%? Algorithms btw

35. ## Anthropology

I am struggling with these question. I did the other seven. Someone please help me. I need some sleep. Are there universal features in human behavior that leads to conflict? Give examples. What are the formal and informal mechanisms of social control? Give

36. ## Physics- Momentum

A 170g cue ball is moving at 3.0 m/s when it strikes a 160g stationary numbered ball (object ball). After the collision the balls move off as shown. Determine the speed of the cue ball and the numbered (object) ball after the collision. The diagram

37. ## Math

Hi, thanks for help in advance. Using the Equation: f(w) = 10/w - 0.77ln(w) – 3.2 How do i use Newton-Raphson iterative to find the required value of w correct to 3 significant figures, starting from w0 = 3. Thanks

38. ## Math

A rectangle wheat field is 10^5 m long as 10^5 m wide. What is the area?

39. ## Physics

What is the difference in blood pressure (mm−Hg) between the top of the head and bottom of the feet of a 1.82m tall person standing vertically?

40. ## math

A liquid spray of mass 384 g is packed in a cylindrical container of internal radius 3.2cm. Given that the density of the liquid is 0.6g/cm3, calculate to 2 decimal places the height of liquid in the container.

41. ## linear algebra

show that the only subspaces of R1 are 0 and R1 itself. okay , so I don't know if I'm making it more complicated than it is, but R1 is just a point right? so i don't know how i would prove this?

42. ## Physics 1

Monique has a mass of 46 kg and she is sitting on a swing that hangs 0.50 m above the ground. Pierre pulls the swing back and releases it when the seat is 1.40 m above the ground. How fast is Monique moving when the swing passes through its lowest point?

43. ## chemistry

Two-stroke motor boat engines emit a large amount of partially burned fuel into the water. One of the more common chemicals is phenanthrene . The degradation half-life of phenanthrene is about 7.30 days in clear surface waters. If a motor boat emits 97.0 g

44. ## math analysis

verify tan x/2=secx /secxcscx+cscx

45. ## math

how many inches in a foot

46. ## law

In your opinion what do you think is more important, civil liberties or security? Do you think that one outweighs the other?

47. ## law

With the recent terrorists threats that the US has had for example the bombings at the Boston marathon, do you think the governement is going enough to protect the country from terrorism?

48. ## law

Does inspirational appeal always have to be engaged from a "top- down" approach? Can a leader develop a team where he becomes nearly "lateral" to his team at times that an inspirational appeal is employed, especially if it is genuine?

49. ## Science fair project

Please help me, i think i have nothing left to do except cry!!! My science fair class presentation is tomorrow but i am not even done, i just started!!!! My parents are upset with me, and i think i will get a F in my report card for science this term, my

50. ## Physics

Calculate the horizontal and vertical components of a 280 N force pulling upwards at an angle of 33 degrees to the horizontal ?

51. ## Physics

Calculate the components parallel and perpendicular to the plane of 150N gravitational force acting on an object on a slope at 20 degrees to the horizontal ?

52. ## science

a ball is dropped fron a building which is 50 metres high.calculate the ball's velocity just before it hits the ground.ignore air resistance

53. ## mathematics

The first three term of a geometric sequence are T1;T2 and T3. If T2=T1+4 and T3=T2 +9, determine the values of T1;T2 and T3

54. ## mathematics

If 3/5/9 and 40/1/2 are the first and the last terms respectively, of a geometric sequence, determine the values of the fifth term if there are seven terms in the sequence

55. ## mathematics

The sum of the first n term of ab arithmetic series is given by Sn=5/2n^2+7/2n Determine the first term and the common different and the tenth term

56. ## maths

The top of a T.V tower casts a shadow of 35 metres long when the angle of elevation of the sun 57°40'.How high is the top of the tower?

57. ## Math

yesterday, molly lunch cost \$9.80 and she left a \$1.49 tip, today molly lunch cost \$12.60 if she tips at the same rate that she did yesterday how much of a tip should molly leave

58. ## maths

An open bucket is in the form of a frustum of a cone,whose radii of bottom and top are 7 and 28cm.If the capacity of the bucket is 21560cmcube,then find the cost of metal sheet used in making the bucket at the rate of Rs. 1per10cmsq.

59. ## Physics

A simple pendulum has mass 1.14 kg and length 0.760 m. (a) What is the period of the pendulum near the surface of Earth? (b) If the same mass is attached to a spring, what spring constant would result in the period of motion found in part (a)?

60. ## Science fair project

Hey, can anyone tell me what is the controlled and manipulative variable of a Non- Newtonian fluid/flow please?????????? Extra thanks to the ones who answer:):):):)

61. ## math

The dissipation of heat through a composite material of width w centimetres can be modelled by the function f(w) = 10/w - 0.77ln(w) – 3.2 You are required to find the width of material that will prevent any heat dissipation. - I understand f(w)= 0, but

62. ## Anthropology

How would an anthropologist from the U.S. or Europe view any culture's domestic control of women without being biased and condemning?

63. ## setswana

kwala athikele ka sese diragetseng ko palamenteng labone !@#\$%^&one go tswerwe kopano

64. ## To Ms.Sue Regarding S.F.P.

Dear MS.Sue, could you please tell me what are the controlled and manipulative variables of a Non- Newtonian fluid???? Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:):):):):):):):):):):):):):):):):):):):):)

65. ## Math

Using: r(t)=15+e*0.04tsin(pi*t/3) "Explain why it takes longer to reach maximum heigh of the first ride but will exceed it." Do i have to use this equation or the previous one of: s(t) = 15+6sin(Pi*t/3). to explain why? Also, to find the distance off the

66. ## math help

The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA. I think it's under triangle bisector theorem. Help me answer this guys. Thanks.

67. ## physics

The tortoise and the hare agree to a race. Of course, they are racing cars, having gotten tired of racing on foot. The tortoise, having just bought a new Mercedes AMG GT, allows the hare to have a running start in his Volkswagen Rabbit. The hare starts the

68. ## Physics

Two boys,each of mass m,are standing at the back of a flatbed trolley of mass 4m.the trolley is at rest on a frictionless horizontal surface.The boys jump off simultaneously at one of end of the trolley whith a horizontal velocity of 2m's.the trolley moves

69. ## PED 212

What are some pros and cons in relevance within a school environment in organized sports?

70. ## MATH

HOW CAN I ANSWER IF THE QUESTION WAS DIFFICULTÉ

1).Find the sum of the n terms of the series Sn=1^2 + 3^2 +5^2+...+(2n-1)^2 2).Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... 3) Sum to n terms,the series 1.3.5 + 2.4.6 + 3.5.7 +.

72. ## math

John was the first US astronaut to orbit Earth. His 3 orbit flight took 4 hours and 55 minutes. His spacecraft took off at 7:15 am. What time was John flight complete?

73. ## fundamental skills

What must a teacher provide for an open-ended question to be successful? A. Heuristics B. Background information C. Discrepant events D. Disequilibrium my answer I think is b

74. ## fundamental skills

An 18-month-old child putting large beads in a plastic bowl and pouring them out is A. developmentally superior. B. normal and appropriate. C. developmentally inferior. D. abnormal. my answer I think is a.

75. ## fundamental concepts

Free play, eating a snack, painting, hearing a story, and so forth are related to which of the following learning concepts? A. Space B. Classification C. Size D. Time a.

76. ## math

21.Faith solves the equation 3(7x+4)=21x+4. How many solutions does she find? A. Infinitely many solutions B. 2 solutions C. 1 solution D. 0 solutions

77. ## life orientation

1.show the link between intrapersonal conflict and initiating relationship

78. ## maths

given 1,0.5,4,o.25,7,0.125,10 assume this pattern continues consistently 1.write down the 33th term in this sequence 2.determine the sum of the first 24 terms in this sequence.give the answer to five decimal place 2.1.in a geometric sequence the fourth

79. ## math

given geometric series is 256+p+64-32 determine the value of p?

80. ## Life orientation

Show link between intrapersonal conflict and initiating relationship

81. ## math

A rally car traveled for 2 hours 40 minutes at an average speed of 120 km/h. The car consumes an average of 1 litre of fuel for every 4 kilometers. A litre of the fuel costs \$ 59. Calculate the amount of money spent on fuel

82. ## mathematics

Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +....

83. ## fundamental skills

When a teacher chooses learning objectives for a child, which question should be asked? A. What should Kelly learn next? B. Where's Kelly in the learning process? C. Do the plan and materials fit my lesson? D. Has Kelly learned what was taught? c.

On sept 14 Jennifer went to bank to borrow 4400 at 10.25% interest Jennifer plans to repay the loan on january 27 assume the loan is on ordinary interest a. what interest will Jennifer owe on january 27?. Interest b. what is the total amount jennifer must

85. ## Physics

You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of -40.0 units

86. ## Physics

A small box is held in place against a rough wall by someone pushing on it with a force directed upward at 29.8° above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.400 and 0.320, respectively. The box

87. ## Physics

A slide loving pig slides down a certain 21° slide in four times the time it would take to slide down a frictionless 21° slide. What is the coefficient of kinetic friction between the pig and the slide?

88. ## math(urgent)

Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... Answer this Question

89. ## Pre-Calculus

If r = 1, will a sequence be convergent or divergent?

90. ## MATH

FROM NOON TO 8 PM, THE TEMERATURE DROPPED 12.8 DEGREES. WHAT WAS THE HOURLY CHANGE IN TEMERATURE DURING THIS TIME??

91. ## Chemistry

Why is the gas oils fraction more viscous than the kerosene fraction

92. ## life orientation

shows the link between intrapersonal conflict and initiating relationship.

93. ## stats

7. Give and interpret the 95% confidence interval for the hours of sleep a student gets.

94. ## multivariable calculus

show that a=!0 , the equation p=2asin0cos0 describes the sphere centered(a,0,0) at radius|a|

95. ## Math

Daniel has 21 coins. All of them are either quarters or dimes. Altogether, he has \$3.45. How many of each type of coin does he have?

96. ## chemistry

suppose 0.0139g of HNO3 is dissolved in 625 mL of aqueous solution. what is the pH

97. ## physics

What average force is required to stop a 920kg car in 7.7s if the car is traveling at 83km/h ?

98. ## Organic Chemistry

Gas Chromatography: The internal standard technique is used. A volatile component which does not interfere with the GC analysis (i.e. it gives a separate peak) is added to the sample which is then analyzed. For example, 10.0 mg of D was added to 50.0 mg of

99. ## algebra

x-(9x-10)+11 = 12x + 3(-2x + 1/3) I am not sure how to do this

100. ## life orientation

The link between intrapersonal conflict and initiating relationship

101. ## algebra

how do I do a question with fractions on both sides of the equation. example 5 over 6x-1 equals -1 over x + 1

102. ## Statistics

A linear regression of price on square footage of homes for sale found the equation price = 30275 + 144*sqft. In this equation, the slope means A. a house with no square feet will cost \$30,275. B. for every 144 square feet, average price goes up \$30,275.

103. ## math

Solve the inequality = 3- 2x ˂ x ¡Ü 2x + 5 and show the solution on the number line

104. ## spanish

replace the underlined objects with the correct object pronoun . be sure to use se when it is required 1/ ayer mi mama compro un lapiz para mi

105. ## Anthropology

In what way would the role of the Western culture anthropologist be different from another culture's anthropologist?

106. ## healthcare

Health care in Canada is funded by which government? I know Canadas healthcare system is funded by a provincial or territorial basis

107. ## math

How do I simplify this expression -2x +11 +6x . Thank you for help

creating a slide that will have a large and a number of bullet points below it. what slide format should she use? A.)comparison B.)title and content C.)title only D.)two content

109. ## physical science

How high is a building when an anvil takes 4 seconds to hit the ground? How long will it take a piano to hit the ground when dropped off a building 103 meters high?

110. ## science

How did/does Galileo's work impact or contribute to our lives today?

111. ## Anthropology

I am sorry about the that. Ms. Sue. In what way would the role of the Western culture anthropologist be different from another culture's anthropologist?. Emotionalist paradigms focus on the role of art to connect to our inner experience and feelings. In

112. ## physics

When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.87 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?

113. ## Math

3^12 divided 3x3^6

114. ## Chemistry

how many grams of ammonium chloride are needed to raise the ammonia level 5 ppm in a 300 gallon system?

115. ## Astronomy

The Hubble Space Telescope orbits at an altitude of 600 km above the Earth's surface. Assuming it is in a stable circular orbit, what is its velocity? For reference, the Earth's radius is 6400 km and Earth's mass is 6 x 10^24 kg. The formula to solve for

116. ## Science - 7th grade

Can you check the following: 1. Draw a Punnett Square to show a dog breeder inbreeding to maintain a purebred line of golden retrievers. Ans: would the parental cross look like Gg x GG or GG x GG? 2. Draw a Punnett Square to show a farmer crossing a plant

117. ## Math

6^7 x 6^11 divided 6^8 x 6^2

118. ## Physics Circular Motion

What is the maximum speed for a car to safely negotiate a 30 banked curve of 60 m radius if there is a coefficient of static friction of 0.35?

119. ## math

The area of a rhombus is 60cm^2. Given that one of its diagonals is 15 cm long, calculate the perimeter of the rhombus.

120. ## Physics (BioPhysics)

You are bending your upper body forward, while your legs remain perfectly straight and their center of gravity remains over the back of your feet (see cartoon below). What is the maximum angle  you can lean forward by without tipping over? Assume that