# Questions Asked onMay 6, 2013

1. ## Introduction to Victimology

•a definition of victimology •its history and how it has developed •explain how its different from criminology, sociology, or psychology •Who established the first safe houses for battered women, as well as where and when these safe-houses were

2. ## Math (algebra)

Let x=2013, y=140542, z=−142555. Find [(x−y)/z + (y−z)/x + (z−x)/y]*[x/(y−z) + y/(z−x) + z/(x−y)].

3. ## Math

Let ϕ(n) be the Euler Phi Function. If 1≤n≤1000, what is the smallest integer value of n that minimizes ϕ(n)n? Details and assumptions Clarification: You are asked to find the value of n, not ϕ(n)n. ϕ(1)=1 by definition.

4. ## Math (algebra)

Suppose a and b are positive integers satisfying 1≤a≤31, 1≤b≤31 such that the polynomial P(x)=x^3−ax^2+a^2b^3x+9a^2b^2 has roots r, s, and t. Given that there exists a positive integer k such that (r+s)(s+t)(r+t)=k^2, compute the maximum possible

5. ## Chemistry HELP!

In order to standardize a KMnO4 solution, 0.3498 g Na2C2O4 was dissolved in 30 mL water and 15 mL 3.0 M H2SO4. The KMnO4 solution was added to the Na2C2O4 solution until a pale pink color persisted. The titration took 29.5 mL of KMnO4 solution. What is the

6. ## Physics

In the following circuit R_1=3 Ohm, R_2=10 Ohm, C=0.003 Farad, V=5 Volts. At time t =0 we connect the power supply to the circuit. At t=0 the capacitor is uncharged. (a) What is the time constant tau (in seconds) to charge up the capacitor? (b) What is the

7. ## Physics

I drink from a glass of water with a vertical straw. What's the longest straw I can use and still drink water if the ambient pressure is 1 atm? Give your answer in meters. Details and assumptions 1 atm is 101,325 Pa. The acceleration of gravity is −9.8

8. ## Physics

You are watching a marching band practice outdoors. Near you are two trumpet players, one marching directly towards you and one away from you at the same speed. Each trumpet player is playing an A (440 Hz) and you hear a beat between the two sounds at a

9. ## Physics

Consider a glass with full of water of mass density ρ=1,000 kg/m3 and height h=20 cm. There's a circular hole in the bottom of the glass of radius r. The maximum pressure that pushes the water back into the hole is roughly (on the order of) p=σ/r, where

10. ## Physics

A motorbike starts from rest at time t=0 and begins to accelerate around a circular track as shown in the figure below. Eventually, at time t=t1 the motorbike reaches the maximum velocity possible without slipping off the track. What's the minimum length

11. ## Finance

4.A thirty year US treasury bond has a 4.0 percent interest rate.In contrast, a ten year Treasury bond has an interest rate of 2.5 percent. A maturity risk premium is estimated to be 0.2 percentage points for the longer maturity bond. Investors expect

12. ## Ngono

What is alcoholism?

13. ## Retirement

1. I would like to retire in 42 years at the age of 65. The average retirement age for women is between 60-62 years of age, and 62-64 for men. 2. My annual amount of money I'll need after retiring would be approxiamately $26,500 (2,205*12=$26,460) using my

14. ## maths

For all positive integers n, let f3(n) be the representation of n in base 3, considered as a number in base 10. For example, since 5 in base 3 is 123, so f3(5)=12. What is the sum of all positive integers n such that f3(n)=8⋅n?

15. ## Math (Algebra)

If the sum of 3 non-zero distinct real numbers a, b, and c is 2, and the two sets {a,b,c} and {1/a,1/b,1/c} are the same, what is the value of a^2+b^2+c^2? Note: Two sets are the same if there is a one-to-one correspondence between their elements. For

16. ## Math

Suppose the quantity demanded per week of a certain dress is related to price by the demand equation p=√75-2x. In order to maximize revenue, how many dresses should be made and sold each week?

20. ## math

Are all quadratics of the form y = ax^2+bx +c and y = -ax^2+bx +c functions? Explain your answer.

21. ## account

1. Business started with Cash Rs. 100,000/-, Bank Balance Rs. 150,000/-, Merchandise goods Rs 40,000/-, furniture Rs. 5,000/- & Office equipment Rs. 30,000/- 2. Goods Purchase from ABC Co of Rs. 40,000/- on cash less 15% discount

22. ## Life Orientation

describe 3 environmental health hazards that cause ill health in south africa globally?

23. ## life orientetion

What are 5 ways in which you critically discuss how the lifestyle disease impact on the teenager?

24. ## math

What is x^2+6x-91 when factored ???!!

25. ## physics

a ball is dropped from a point heiht above the ground.on striking the ball it rebounds with a small speed as it strikes with the ground and would hence come up to same height from were it was dropped and motion remained infinetly?draw x-t gaphs?

26. ## physics

A motorbike starts from rest at time t=0 and begins to accelerate around a circular track as shown in the figure below. Eventually, at time t=t_1 the motorbike reaches the maximum velocity possible without slipping off the track. What's the minimum length

27. ## physics

You are watching a marching band practice outdoors. Near you are two trumpet players, one marching directly towards you and one away from you at the same speed. Each trumpet player is playing an A (440 Hz) and you hear a beat between the two sounds at a

28. ## physics

A typical science question young people have is "Why can a glass can contain water?" and a typical answer is "Because the distance between molecules that make up the glass is smaller than the size of each water molecule." This isn't quite right though.

29. ## L.O

Identify and describe 3 environmental health hazards that cause ill health,crises,and or disasters within your community or any other community within south africa and globally.inlcude evidence that is current of the identified issues

30. ## Math

A firm manufactures light bulbs and those that come out of the assembly line are either defective or good. Every five bulbs that come out, 1 is defective. If 3 bulbs are selected at random, what is the probability that: (i) All 3 are defective (ii) All 3

31. ## mill creek high

what are some examples of archetype in the book

32. ## Math (Algebra)

What is the remainder when 5×55×555×…×555,555,555 is divided by 100?

33. ## Math

a) In what way could the graph be misleading. b) How could you redraw the graph so that it is less misleading

34. ## Math

A researcher tagged 40 giant turtles in 2008. In 2009 , she returned and captured 50 turtles , 16 of which were tagged. In 2010 , she returned again and captured 30 turtles , 8 of which were tagged. a) Use a proportion to estimate the turtle population for

35. ## maths

The magician, The Great Ziginy, is planning his next world tour. He knows a total of 7 different illusions but he only has time to perform 4 of them at any show. The Great Ziggy does not want any two of his shows to be identical, so they cannot contain the

36. ## Calculus

A function is implicitly defined by x^2 - 4y^2 = 9 Find the equation of the tangent to the function at x = 1

37. ## Pre calc

Write the equation in standard parabola form? x^2+ 4xy +4y^2 +5root5 y+ 5 = 0 Thanks so much!

38. ## Physics

a. 2 objects each of mass 200 kg and 500 kg are separated by 50 cm. Where body of mass 20 kg should be placed so that the resultant force of gravity experienced by objects equal to zero? b. launched a rocket leaving Earth. Known radius of the earth 6.4 x

39. ## Calculus

A cone is inscribed in a sphere of radius a, centred at the origin. The height of the cone is x and the radius of the base of the cone is r, as shown in the diagram opposite. Find the height, x, for which the volume of the cone is a maximum. (HINT: show

40. ## Statistics

A true-false test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct answer, but one point is taken off for each wrong answer. Suppose a student answers every question by guessing at

50. ## Physics

A transverse wave traveling in a string takes 1.61 s to move 13.2 m. The mass of a 9.2 m piece of the string is 1.5 kg. What is the tension in the string?

51. ## life orientation

discuss 10 ways in which the environmental health hazard can impact negatively in one's health

52. ## L.O

Critically discuss 5 ways in which in which xenophobia imapact on the community?

53. ## management science

Suppose the results of an IQ test are normally distributed, with a mean of 10 and a standard deviation of 16. If 150 people took the test, how many do you expect would score between 95 and 130?

54. ## Physics

A steel piano wire, of length 1.0 m and mass 4.4 g is stretched under a tension of 650.0 N. What is the speed of transverse waves on the wire?

55. ## Physics

A steel piano wire, of length 1.0 m and mass 4.4 g is stretched under a tension of 650.0 N. What is the speed of transverse waves on the wire?

56. ## Social Studies

I need a 4 paragraph essay on the devil's arithmetic. my theme is "no laugh, no hope. NO hope, no life." THANK YOU (: im not passing and i reallllllly neeed help on this

57. ## Biology

How does the changes in the DNA code from CTT to CAT in the beta chain of haemoglobin affect cell activity?

58. ## life orientation

identify and describe three environmental health hazards that cause ill health,crises,and or disasters within mamelodi

59. ## art

What are the subclaims in Bernini's works of art

60. ## Math

A rubber ball is thrown straight down from a height of 244 feet at speed of 80 feet per second. If the ball always rebounds with one-fourth of its impact speed, what will be the speed of the ball the third time it hits the ground? My Answer is: 1/4*80=60

61. ## Math

Alonzo plans to retire as soon as he has accumulated $250,000 through quarterly payments of$2,500. If Alonzo invests his money at 5.4% interest, compounded quarterly, when (to the nearest year) can he retire?

62. ## Math

What is an example on how to use fractions used in graphic design.

63. ## Algebra 2

Find the expansion of (r + 4)^3. r^3 + (3r^2)(4) + 3r16 + 64?

64. ## life orientation

In 10-15 lines critically discuss 5 ways in which the environmental problems impacts on the community. Provide relevant source to support you answer.

65. ## Math

You and six of your friends will go on a roadtrip. A seven passenger minivan is rented for the weekend. How many different ways can you and your friends sit in this vehicle?

A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16·1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.76·1014 Hz. Calculate the speed at which the galaxy is

A student in a parked car honks the horn, which has a `proper' frequency of 320 Hz. An observer in an approaching vehicle measures the frequency of the sound to be 355 Hz. Calculate the speed of the approaching vehicle. Use 340 m/s as the speed of sound in

68. ## health

(A) identify and describe 3 environmental health hazards that cause ill health, crises, and or disaster within your community or any other community within south africa and globally. Include evidence that is current of the identified issues.( b)critically

69. ## chemistry

The pKb of ammonia solution, NH3(aq) is 4.76. A buffer solution contains NH4Cl and NH3, has a pH of 9.45, and a total ammonia concentration (all forms) of 0.400 M. What is the concentration of NH4+? (Hint: [NH4+] + [NH3] = 0.400 M)

70. ## maths

The product of the digits of a positive two-digit number exceeds the sum of the digits by 39. If the order of the digits is reversed, the number is increased by 27. Find the number.

89. ## Physics

A roller coaster works by gravitational energy. The coaster car is pulled up to a high point and then released, rolling downwards on the track through all manners of curves and loops. I have a short roller coaster car that I pull up to the top of a hill of

90. ## Math (Combinatorics)

A lottery ball drawing machine has 50 balls, each labeled with a distinct integer from 1 to 50. Every Sunday, four different balls are drawn to determine the winning numbers. You have last Sunday's ticket with the numbers {3,7,12,15}. You missed the

91. ## l.o

5 ways in which the human or environmental problem impacts on the community. Proide relevent sources to support the claims.

92. ## Life orientation

(A)IN 10-15 lines critical discuss 5 ways in which the human or environmental problem impacts on the community . Provide relavant sources to support your claims.

93. ## life orientation

In 10-15 lines discuss 10 ways in which pollution impacts on the community.provide references

94. ## Life orientation

(A)IN 10-15 lines critical discuss 5 ways in which the human or environmental problem impacts on the community . Provide relavant sources to support your claims.

95. ## embryology

what is gud book to study about embryology

96. ## Geometry

One right circular cone is set inside a larger circular cone. The cones share the same Axis, the same vertex, and the same height. Find the volume of the space between the cones of the diameter of the inside cone is 6in., the diameter of the outside cone

97. ## Physics

Consider the series RLC circuit in which R2

98. ## Life science

How would u experiment be affected if you added a few drop of concetrated sodium hydroxide to test tube

99. ## Physics

Consider the following standing wave, (all units are SI) z=0.2sin(0.4y)cos(350t) (a) The values of t where the displacement at all values of y equals to zero are of the form : t=c+dn, where n=0,±1,±2,3, etc. What is c? What is d?

100. ## History

In World War 2 why did the dictors think they could take over Europe and other places??

101. ## life orintation

name two community/organizations that are invloved in supporting or giving redress to drought

102. ## Life orientation

In 10-15 lined critically discuss 5 ways in which the human or environmental problem impacts on the community.provide relavant sourrces to supprt your claims

103. ## math

Which is the best display for the set of the number of tornadoes in the United States each year , If you want to be able to identify the mode? a) histogram with intervals of b) frequency table with intervals of 3 c) line pot d) line graph

104. ## Calculus

In a right triangle, if one leg (adjacent to 90 degrees) is 10cm, which is increasing at the speed of 2cm/s; and another leg is 24 cm, which is decreasing at 2cm/s. how fast is the hypotenuse changing at this time?

105. ## life orientation

5 ways of pollution which the human or environmental problem impacts on the community

106. ## Mathematics

the scale on a map is given as 1:2000000. the distance between two towns on the map is 4.3. what is the actual distance between the towns in cm (squared)?

107. ## Life orientation

What are 2 institutions that are involved in supporting drug abuse?

108. ## finance

Calculate the IRR of the following project: Year Cash Flow 0 -$30,000 1$40,000

113. ## math

find the missing side of the triangle b=2.1 c=29

114. ## statistics

A random number generator draws at random with replacement from the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. In 5000 draws, the chance that the digit 0 appears fewer than 495 times is closest to 25%,30%,35%,40%,45%,50%

115. ## math

In a set of 400 values, the mean is 121 and the standard deviation is 14. Estimate how many values fall in between each interval? a) 107 - 135 b)93 - 149 c) 79 - 163

116. ## life orientation

What are the environmental factors that causes ill health or accident or diseases

117. ## math

One of your dresser drawers contains 10 black socks and 10 blue socks. Suppose it is dark and you can’t tell what color a sock is when you look at it. If you start taking socks randomly one at a time from the drawer, how many would you have to take to

118. ## math

A small grill can hold two hamburgers at a time. If it takes 5 minutes to cook one side of a hamburger, what is the shortest time needed to cook both sides of five hamburgers? 30 15 20 25

119. ## math

Fred arrives at the subway station every day at a random time and takes the first train that arrives. If he takes the A train, which arrives each hour on the hour, he ends up at the fitness center. If he takes the B train, which arrives every hour 15

120. ## math

One of your dresser drawers contains 10 black socks and 10 blue socks. Suppose it is dark and you can’t tell what color a sock is when you look at it. If you start taking socks randomly one at a time from the drawer, how many would you have to take to

121. ## science

An atom loses an electron. What will happen when it approaches a positively-charged ion? A. The ions will repel each other. B. The ions will attract each other. C. The ions will cancel each other out. D. The ions will neither attract nor repel each other.

122. ## Justice system

1. Murder implies malice, whereas __________ does not. A. manslaughter B. willful homicide C. forcible rape D. aggravated assault is it A 2. __________ involves sexual intercourse with a corpse. A. Pederasty B. Bestiality C. Necrophilia D. Buggery is it C

123. ## Sports : Softball

I am always in sports. i have been playing softball lately and my arm starts to hurt when i throw sometimes it get so bad that the pain goes to my elbow. i can say it is noticing when i play that i am not throwing as hard as i can and then i git yelled at

124. ## Physics Plz help me

The activity of a sample of 35(upper#) 16(lower#)Sulfer (T 1/2= 7.55x10^6 s) is 2.51x10^5 decays per second. WHat is the mass of the sample? m= in grams PLease help me out...Thank you! :)

125. ## justice system

1. “Substantive due process” refers to: A. the content of a law. B. the application of law. C. the application of penalties. D. criminal procedure. is it A 2. __________ is the act of taking a person into custody. A. Search and seizure B. Arrest C.

126. ## math

Brianna works at a sunglass shop. She earns $9 per hour and a$1 commission for each sale she makes. From July 1 to July 5, she saves all her money and doesn’t spend anything. Each day, from July 1 to July 5, Brianna worked 4 hours. • On July 1,

127. ## WorldHistory

3.How was Napoleon able to control the countries neighboring the French Empire? He placed French garrisons in the countries. Made members of his family their head of state who in turn acknowledged Napoleon's will. He required them to supply him with

128. ## WorldHistory

What factors led to Robespierre becoming a dictator? Beginning with the execution of Louis XVI in January 1793, France faced an increase in food riots, large popular insurrections and devastating treasonous acts by those thought to be patriots. Also,

129. ## Chemistry

Calculate the volume of 2.45 M NaI that would be needed to precipitate all of the Hg+2 ion from 185 mL of a 2.44 M Hg(NO3)2. AND Calculate the molarity of an acetic acid solution if 47.81 mL of the solution is needed to neutralize 147 mL of 1.32 M sodium

130. ## math

Flora’s class collected 236 books. They are placing the books in boxes. If each box holds 8 books, how many boxes can they fill? if there are books left over, what portion of the last box will be filled? 30 full boxes 29 full boxes and 1 box that is full

131. ## Chemistry

A certain gas has a solubility of .50 g/L under a pressure of 1500 torr. What would its solubility be a 2250 torr?

132. ## math

Three forces act on a hockey pick as it slides across the ice; the normal force N represents the force the ice exerts upward on the puck and is given by N= , the gravitational force G represents the downward force of gravity on the puck and is given by G =

133. ## Chemistry

A salt solution is evaporated to dryness. If 66.5 g of the solution leaves 1,492 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution?

134. ## Math

The AC voltage coming out of a standard wall plug in the United States can be expressed as the function V(t) = 120sin(120*pi*t), where t represents time (in seconds) and V is the voltage. We will let t be greater than or equal to 0 for simplicity. A. Make

135. ## Math

Holly is flipping a coin and pulling a marble from a bag. There are 4 white marbles, 2 blue marbles, and 5 green marbles, all of the same size, in the bag. What is the probability that the coin lands on heads and she pulls a green marble from the bag?

136. ## Maths

Please help me.Iam stuck. Find all the possible values of theta between 0 degree and 360 degree for the following quadratic equation. State the quadrants in which each angle lie. 8 tan^2 theta + 2 tan theta=15

137. ## WorldHistory

significant consequences of the Agricultural Revolution. EFFECT ON WOMEN LIVES: The British Agricultural Revolution was the cause of drastic changes in the lives of British women. Before the Agricultural Revolution, women worked alongside their husbands in

138. ## Maths

Please help me.Iam stuck. Find all the possible values of theta between 0 degree and 360 degree for the following quadratic equation. State the quadrants in which each angle lie. 8 tan^2 theta + 2 tan theta=15

139. ## Maths

Ship A is 18.5km from a port P on a beearing of 045 degree and ship B is 26.4km from point P on a bearing of 105 degree. Calculate the bearing of A from B and the distance AB.

140. ## Trig

csc thea= -2, quadrant 4. what are the six trig functions?

141. ## maths

Please help me simplify this and show full working out. (a) (2x^3 divide 3y^4)^2 multiply (x divide 3y)^-2 (b) a-a^-1 divide a^2 - 1 (c) 3^a+2 times 9^2a+1 divide by 6^2 times 3^5a+3

142. ## history

Which of the following is true with regards to The Navigation Acts by the eighteenth century? A- In general, the colonist despised the acts and smuggling was rampant. B- The Navigation act of 1696 abolished the American customs service. C- The colonists

143. ## Life Science

If a sponge (from the ocean, not a cleaning sponge. :P) were torn apart by a predator, what would happen?

144. ## maths

Please I need help.Show full working out. (a) sin x cot x= cos x (b) (1 + tan theta)^2 + (1- tan theta)^2 = 2sec^2theta

Bryan is putting fencing around his new rectangular vegetable garden. He uses 140ft of fencing material. How wide is the garden? Ther is a rectangular diagram that shows the bottom number is 40ft

What is 508 times 7?Thanks if you help:)

156. ## Math Multiplying Fractions

Multiply. Simplify if you can. 2.1/3x2/5=2/15 4.2/5x3/7=6/35 6.1/6x3/5=3/30 8.9/10x4/5=36/50 10.11x3/4=33/4=8 1/4 12.4/9x2/3=8/27

157. ## math

a musical triangle has a perimeter of 180 mm. the side of middle length is 2 times as long as the shortest side. the longest side is 3 times as long as the middle side. how long is each side

158. ## Chemical engineeing

Can someone help me with online exam ( fundamental of chemical engineering class ) ? Please eamil me ( davd_jo(at)(ya h o o )dot (com ) I'll offer money

159. ## Science

At which point is more silt in the water in the mountains or on flatland why

160. ## Chemistry

Help please!!! Complete the two reduction half reactions for the cell shown at the right, and show the line notation for the cell by dragging labels to the correct position. (The electrode on the left is the anode, and the one on the right is the cathode.)

161. ## Chemistry

For the following battery: Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) (a) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) C(s) electrode:? (c) Calculate the mass of Cl2 consumed if

162. ## 5th grade math (word problems)

Can you explain how to do the following problems? 1. Order these fractions from Greatest to least. 3/12, 5/8, 1/4, 7/8, 4/16 work: find least common denominator 3/12 = 12/48, 5/8 = 30/48, 1/4 = 12/48, 7/8 = 42/48 answer = 7/8, 5/8, since 3/12 and 1/4 are

163. ## life orientation

In 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community in related to substance abuse

164. ## is this correct algebra 1

(x^2 -5)+ (4x^2 -3) 5x^2-4x-15-20x 5x^2-24x-15

165. ## math

Vance wants to fence in a rectangular area for his dog. He wants the length of the rectangle to be at least 30 feet and the perimeter to be no more than 150 feet.

166. ## math

a 50 foot length of rope was cut into two pieces. the first piece is 5 feet more than twice the second. what are the lengths of the two pieces of rope?

231. ## Math (Algebra)

3 robots go out to lunch. They decide to share the \$11.91 bill evenly. How much does each robot pay? Equation: 3x = 11.91 #1. What does x represent? #2. Solve for x. #3. Answer the question.

232. ## algebra

how do i figure: (-12a^2b^6)^3 over (9a^3b^9)^3

233. ## parabolas

Find the equation and sketch the parabola that has vertex V (-1; 0) and focus F(-4; 0).

234. ## chemistry

When boiled with concentrated aqueous alkali, fats and oils dissolve, but waxes do not. Explain the difference.

235. ## Trig

cos[(tan^-1(3/4))+(cos^-1(9/41))]

236. ## Music

2. What is the 2nd scale degree of D flat major? is it G flat? 8. The interval between F and A is the same as a. D and B b. A and B c. F and G d. C and E 9. A minor second on the white keys is between a. A and B b. G and A c. D and E d. E and F 10. A half

237. ## ?

What does titi mean

238. ## immunology

do monocytes derive from killer T cells?

239. ## chemistry

how many grams of carbon dioxide can be produced when 15.g of oxygen is reacted with 25.g of c2h2

240. ## math

A weather states that there is a 60% chance of rain on Saturday and a 60% chance of rain on Sunday. Explain why the chance of rain on Saturday and Sunday isn't equal to 120%.

241. ## math

I have 50.00 to buy 50 animals. Chickens are .50, cows are 2.50,and birds are 5.00. How many of each animal can i purchase?

242. ## social studies

Why were Palestinians kicked off their land by the Jews?

243. ## Math (Probability)

Four players are playing a game involving choosing squares on a grid of size 3×8. Each player chooses a random square on the grid, then all players reveal their choices and a token is placed in the center of each of these squares. The probability that the

244. ## chemistry

how many grams of iron (iii) nitrate are needed to produce 25.0 g of iron (iii) sulfate form sulfuric acid?

245. ## Math

The president has a brother the brother dose not have a brother how is this possible?

246. ## gas stoiciometry

What volume of ammonia gas will be produced when 1.44 L of nitrogen react completely in the following equation? N2 + 3H2 = 2NH3

247. ## Math

What is the measure of the side of a cube if the volume is 27000cm3?

248. ## chemistry

Calculate the concentration of each solute and each ions when 25.0 mL of 18.0 M H2SO4 is mixed with 130.0 mL water

249. ## calculus

Set up the integral that would be used to find the volume of the solid obtained by rotating the region bounded by y=x^3 , y=8, and x=0 about the x=-4. use disk/washer method.