# Questions Asked onFebruary 23, 2012

1. ## elementary stats

the participants in a television quiz show are picked from a large pool of applicants with approximately equal number of men and women.Among the last 11 participant there have been only 2 women.If participants are picked randomly,what is the probability of

2. ## Science

A blue-eyed man, both of whose parents were brown-eyed, marries a brown-eyed woman whose father was blue-eyed and whose mother was brown-eyed. This man and woman have a blue-eyed child. What are the genotypes of all these individuals?

3. ## Geometry

Marion is observing the launch of a space shuttle from the command center. When she first sees the shuttle, the angle of elevation to it is 16°. Later, the angle of elevation is 74°. If the command center is 1 mi from the launch pad, how far did the

4. ## math

The ratio of zinc and copper in an alloy is 7:9. if the weight of copper in the alloy is 11.7 kg, find the weight of zinc in alloy?

5. ## math

You want to determine the height of your school. The building casts a 6 foot shadow at the same time you cast a 15 inch shadow. If you are 5 feet tall how tall is the building?

6. ## Physics

Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?

7. ## physics

The Ferris Wheel in the figure below is a vertical, circular amusement ride with radius 10 m. Riders sit on seats that swivel to remain horizontal. The Ferris Wheel rotates at a constant rate, going around once in 11 s. Consider a rider whose mass is 59

8. ## physics

Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of –3.0 x 10–9 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of

9. ## physics

Two men pushing a stalled car generate a net force of +698 N for 7.37 s. What is the final momentum of the car?

A 2.00kg block is pushed against a spring with force constant k=400N(m^-1), compressing it 0.180m. The block is then released and moves along a frictionless horizontal surface and then up frictionless incline with slope angle 37.0degrees. a. What is the

11. ## writting a program

Speed of Sound. Sound travels through air as a result of collisions between the molecules in the air. The temperature of the air affects the speed of the molecules, which in turn affects the speed of sound. The velocity of sound in dry air can be

12. ## chem

Consider the reaction 4KO2(s) + 2CO2(g) ! 2K2CO3(s) + 3O2(g) . How much KO2 is needed to react with 75.0 L of carbon dioxide at STP?

13. ## CHEMISTRY

Give the NAMES and FORMULAS for the following COVALENT (nonmetallic) compounds. 1. Sulfur hexafluoride 2. Tetraphosphorus heptasulfide 3. Silicon tetrachloride 4.Disulfur decafluroine moniodide 5. Iodine pentafluoride 6. Tetranitrogen trisulfide 7.

14. ## computer science

Class scores: Write a program that calculates the total grade for N classroom exercises as a percentage. The user should input the value for N followed by each of the N scores and totals. Calculate the overall percentage (sum of the total points earned

15. ## Calculus

Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to$20 per microscope per year. storage costs, based on the maximum number of

16. ## Physics

The potetial energy of a spring is 0.25 J when it is compressed 0.05m to the left of the equilibrium position. At this point it comes to its leftmost position. What is its kinetic energy when it returns to its equilibrium point? a. zero b. 0.25 J and the

17. ## Economics

B. Suppose there are two goods, Cloth and Food, and two factors of production, labour and capital. Suppose that the production function for each good is "homothetic". Put capital K in the vertical axis and labour L in the horizontal axis. For Cloth

18. ## physics

5. An object that has kinetic energy must have ____________________. A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these.

19. ## CHEMISTRY

The following reaction represents the decomposition of hydrogen peroxide: Balanced equation: 2H2O2 -> O2 + 2H2O How many moles of oxygen are produced from the decomposition of 3.4g of hydrogen peroxide? How many molecules of O2 are produced? For the second

20. ## AP CHEMISTRY

Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere. A) bis(bipyridyl)cadmium(II) chloride B) potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)

holly's garden is divided into 5 equal sections. she will fence the garden into 3 areas by grouping some equal sections together. what part of the garden could each fenced area be?

22. ## Physics

Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars

23. ## statistics

Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the scores are above 130?

24. ## elementary stats

On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers.

For the given function, compute the missing values in the following table. f(x) = 8x i got the negatives wrong, but I know how to solve for it. Is there a reason it is wrong? -3: -1/512 -2: -1/64 -1: -1/8 (^These were wrong, but I don't know how to solve

48. ## physics

At 1:00 p.m. a car, traveling at a constant velocity of 86 km/h toward the west, is 22 km to the west of our school. How far from the school will it be at 3:30 p.m.? Answer in units of k

49. ## Finite

One coin is fair and one is weighted so that Pr[H] = [ 1/4]. You randomly select one of the two coins, and flip it 3 times, noting the result of each flip. What is the expected number of heads?

50. ## Chemistry

If a hydrate was found to contain 12% water and the original weight of the sample was 30g, what will be the final weight of the anhydrous sample?

51. ## Maths

The Sentosa High School's telephone number is an eight digit number. The sum of the two numbers formed from the first three digits and the last five digits respectively 66558. The sum of two numbers formed from the first five digits and the last three

52. ## physics

A man pushes on a piano with mass 200 {\rm kg} so that it slides at constant velocity down a ramp that is inclined at 10.5^\circ above the horizontal floor. Neglect any friction acting on the piano.

53. ## Physics

A 0.168kg hockey puck slides at 11.4m/s. what is the work needed to stop the puck?

54. ## physics

A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure below. (Assume ha = 5.20 m.) B=3.20 c=2.00 (a) Determine the block's speed at points circle b and circle c. point circle b Y

55. ## Math

The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle?

56. ## english

Critical thinking: alien tour guide

57. ## CHEMISTRY

Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H

58. ## physics

The distance between two successive crests of a certain transverse wave is 1.05 m. Eight crests pass a given point along the direction of travel every 17.9 s.

Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide

60. ## Math help needed

How many capsules , each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 lbs?

61. ## college alg

A meat market has ground beef that is 40% fat and extra lean ground beef that is 15% fat. How many pounds of each(ground beef and extra lean) must be together to get total of 50 pounds of "lean" ground beef that is 25% fat?

62. ## physics

A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.

63. ## Physics

Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in

64. ## programming

Ancient square root algorithm. The Babylonian algorithm to compute the square root of a number n is as follows: 1. Make a guess at the answer (you can pick n/2 as your initial guess). 2. Compute r = n / guess 3. Set guess = (guess + r) / 2 4. Go back to

65. ## math

construct an equilateral triangle ABC in which altitude drawn from opposite vertex is 3.5 cm.Also construct a triangle APR similar to a triangle such that each side of the triangle APR is 1.5 times that of the corresponding side of triangle ABC.

66. ## Precalculus

Solve Cos^2(x)+cos(x)=cos(2x). Give exact answers within the interval [0,2π) Ive got the equation down to -cos^2(x)+cos(x)+1=0 or and it can be simplified too sin^2(x)+cos(x)=0 If you could tell me where to go from either of these two, it would be great

67. ## PHYSICS

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine?

68. ## Calculus

If x=2sec (theta), express tan(theta) in terms of x.

69. ## MATH

Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?

70. ## physics

A speeder traveling at 38 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.03 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?

71. ## physics

A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?

72. ## Mrs.Sue Math pls check :)

I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

73. ## algebra

A shipping clerk wishes to determine the weights of each of the 4 boxes. Each box weighs a different integer amount less than 70 kg. Unfortunately, the only scales available measure weights in excess of 70 kg. The clerk therefore decides to weigh the boxes

74. ## Math

A school principal randomly choose 75 students for a survey on the cafeteria food. Determine whether the sample may be biased. Explain.

75. ## English

How should this be written to correct the dangling modifier? The cost of production can be reduced by purchasing an ultra-pure water system.

76. ## Algebra; HELP

Solve the equation. 3x^2+18x+24=0 Explanation, too please!

77. ## physics

A professor drives off with his car (mass 800 kg), but forgot to take his coffee mug (mass 0.35 kg) off the roof. The coefficient of static friction between the mug and the roof is 1.1, and the coefficient of kinetic friction is 0.5. What is the maximum

78. ## English Lit-Check please-thank you

We're reading "The World is Too Much with Us by Wordsworth. We have some questions to interpret-I understand about Wordsworth and his relationship and philosophy concerning nature but I'm just not sure after further research the answer to these two

79. ## Chemistry/Calorimetry

You buy coffee (200.0 ml) served in a styrofoam cup. You are up late working in a chemistry lab, and want to drink the coffee right away, but at 95.0 degrees C, it is too hot to drink. You like the temperature of your coffee to be 79.0 ± 1.0 degrees C.

86. ## physics

A 59.0-kg runner has a speed of 3.20 m/s at one instant during a long-distance event. (a) What is the runner's kinetic energy at this instant? KEi = J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? KEf

87. ## physics

A spring S of force constant k=100 N/m. is fixed to the base of a 30 degree incline.A mass m=50g. is held against the free end of the spring,so that the spring is compressed by 0.1 metre.If the mass is now released,calculate the distance travelled by the

88. ## Maths

Karen took 1hour 45mins to drive from Town A to Town B. She took another 25 mins drive from Town B to Town C. After that, she drove back to Town A. The journey from Town A to Town C and then back to Town A took 3h and 3mins. Find the percentage of time she

89. ## GeOmEtRy!!!

Which of the following expressions is equivalent to (4a^2b)^3(ab)^3? a. 64a^9b^6 b. 12a^7b^6 c. 64a^7b^9 d. 16a^6b^6

90. ## principles of physics

Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a distance of ____________________. A) 1 meter. Feedback: Incorrect! B) 0.5 meter. C) 0.25 meter. D) None of these.

91. ## chemistry

One purpose of adding KIO4 is to prevent the permanganate ion from being slowly reduced to Mn+2 by H2O. Write a balanced redox equation for the reduction of permanganate ion to Mn+2 by water in acid solution.

92. ## Chemistry

A particular reaction has an activation energy of 51.6 kJ/mol-rxn. How much faster is the reaction at 50 oC versus 25 oC? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast I think it would be A??

93. ## physics

Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a distance of ____________________. A) 1 meter. B) 0.5 meter. C) 0.25 meter. D) None of these.

133. ## Calculus

Integrate 1/(square root of (x^2 +2x +37))

134. ## geometry

Find the lateral area of a right triangular prism with an equilateralbase length of 5cm and height of 10cm.

135. ## math

Cierra arrived at her dance at 9:05. She waited in the classroom for 10 minutes and them the class began. If the class ended 1 hour 10 minutes later,at what time did the class end? A.10:15 B.10:20 C.10:25 D.10:30 C?

The sum of an uncirculated 'Mint-65 '1950 jefferson nickkle mintedd in Denver is 4/3 the value of a 1945 nickle minted in philadephia in similar condition. Togather the total of two coinsis$35. What is the value of each coin? asked by debbie 137. ## computers a file with the extension of .bmp is an audio file? true or false? I say true asked by Elizabeth 138. ## maths the radius of a circle is 8cm and the length of one of its chords is 12cm. find the distance of the chord from the centre asked by sushma 139. ## math the picnic committee dicided that the charge for this year's fundraiser picnic is$10 per family puls %2 for each person in the family. determine the number of people in a family that pays $36? asked by taylor 140. ## algebra Solve using the substitution method 6x-3y=18, 6x+3y=-12 asked by sharday 141. ## scientist What is the kinestic energy of a bullet of 22kg fire from a gun with a speed of 6m`s asked by Bright 142. ## Geometery 2. Use only a compass and a straightedge to construct each of the following, if possible: a. A segment congruent to and an angle congruent to ÚACB CB asked by Darcy 143. ## statistics A secretary can type 12 names per 60 secods in an average classroom how long will it take her to type all the names asked by Natasha 144. ## Chemistry If 30% of a sample of radioactive isotope decays in 24 hrs, what is the half-life? How do i know which order to use? and do I convert hr to mins or seconds? Pls help for my exam tomorrrow asked by tina 145. ## Chemistry [OH] = 1.5 x 10^-13 , what is the [H3O] ? This is what I did. 1.0 x 10^-14 M / 1.5 x 10^-13 M = 1/15 or.066666 So what is the correct answer? Thank You asked by Misa 146. ## Calc Integrate from [0, 1/2]: 1/(4x^2+1)^(3/2) dx asked by Anonymous 147. ## chemistry A hydrocarbon,in volume of 25 L at 400K and a pressure of 3.40 atm reacts in an excess of oxygen to give 47.4G and 231.6g CO2.Determine the molecular formula for the compound? asked by Silvester 148. ## college algebra given f(x)=4x-5, g(x)= x+5 over 4 Find (fog)(x). are these inverse functions? asked by missy 149. ## accounting Your review of the general ledger of Home Interior Improvements and Designs Company reveals a beginning capital balance of$25,000. You also review the general journal for the accounting period and find the closing entries shown on the next page.Prepare a

When only the front wheels of an automobile are on a platform scale, the scale balances at 7.8 kN; when only the rear wheels are on the scale, it balances at 5.5 kN. What is the weight of the automobile? How far is its center of mass behind the front axle?

151. ## math

find the percent of decrease. round to the nearest tenth if necessary from 49 cm to 34 cm

152. ## geometry

find the altitude of an equilateral triangle with side length twelve

153. ## Western Civilization

How did the intellectual theories of Charles Darwin, Karl Marx, Sigmund Freud and others signal a revolution in modern thought?

154. ## Math

Whatis the surface area of the right square pyramid in square meters? Dimensions: Base/length: 6 meters Slant height: 5 meters I know the formula is S.A.=1/2P "l"+B. I don't know what P or B is.....

155. ## PHYSICS

A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

156. ## CHEMISTRY

Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluoride-SF6 2. Tetraphosphorus heptasulfide-P4S7 3. Silicon tetrachloride-SiCl4 4.Disulfur decafluroine moniodide-S2F10I 5. Iodine

157. ## GeOmEtRy!!!

How many x-intercepts does the graph of y=x^2-4x+4?

a block with a mass of 5.00 kg is moving at 8.00 m/s^-1 along a frictionless horizonal surface toward a spring with force constant k= 500 N/m^1 that is attached to a wall.find the maximum distance the spring is compressed. the spring has negligible mass.

159. ## geometry

A piece of board 8yd by 6yd is cut into squares.The perimeter of each square is 8yd.How many squares are there?

160. ## Anatomy

I need a site that has a labled picture of what parts are found in the knee joint when disecting a fetal pig

161. ## social studies

How was Mesopotamia first united into one empire?

162. ## English

How do I cite a picture that is in an article for my work cited page???

163. ## chemistry

What volume of a 4.50% v/v solution of ethanol in water can be prepared with 23.9 mL of ethanol

164. ## Psychology

How does self-concept affect perception?

165. ## Recheck-Essay

By studying in the USA, I believe that I am not only getting an internationally recognized education, but also a thrifty one. My decision to study here will help me become independent. In addition, the money I save by studying here will eventually help me

166. ## English

Writeacher, could you please check my post, I need to prepare for tomorrow? Thank you!! Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion.

167. ## pre-algebra

When designing a pattern, Erica rotated a triangle 90 degrees about the midpoint of one side to create a second triangle. If the area of the original triangle is 48 square inches, what is the area of the second triangle?

168. ## Physics

In the reaction U gives Th + He 6.88*10-13 J energy are released as the kinetic energies of the products. If the ratios of the masses Th to He is 234:4 find the kinetic energy of the alpha particle

169. ## life orientation

substance abuse of both legal and illegal drugs among the youth

170. ## Axia College

Need help with solving the double equation problem. 3x + 2y = 3 9x - 8y = -2

171. ## physics

An object that has kinetic energy must have which of the following?A) momentumB)acceleration c all of these d none of these

172. ## Calculus

find f'(x) if f(x)=x^2e^(x(3x-1)^3

173. ## PHYSICS

A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

174. ## GeOmEtRy!!!

what are the solutions to the following equation 3x^2+5=80?

175. ## algerbra

the length of a rectangle is one foot more than twice its width. If all sides were increased by 7feet the perimeter of the new triangle would be 122 ft. find the new dimensions of the new rectangle

176. ## geometry

the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle

177. ## MATH word problem

I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

178. ## english

is this sentence correct What did the philosopher Aristotle mean when he said "To perceive is to suffer"?

179. ## social studies

Why did Egypt want to control Nubia?

180. ## Algebra 2

My question involves "Graphic Representation of Radicals of the Second Order" I know that the length of the hypotneuse of a right triangle equals the square root of the sum of the lengths of the two legs. The problems I'm having trouble with are the square

181. ## Computer Programming (XML)

Using the employees.xml file below, create a DTD file â€œemployee.dtdâ€ based on â€œemployees.xmlâ€. Create a schema files â€œemployee.xsdâ€ based on â€œemployees.xmlâ€. Create a html page â€œemployees.htmlâ€

182. ## Math

A playground has the shape of a parallelogram. If the base is 30 feet, and tyrese corresponding height ishhhh 25 feet, what is its area?

183. ## English

I am looking for the dependent clauses in this sentence. 1. Because nests of baby dinosaurs have been found, scientists believe that these ancient creatures cared for their young for some time. Scientists believe is the independent clause. Are the other

184. ## English Lit-Writeteacher please check if possible

I really appreciate you helping me earlier today but I have another poem by Wordsworth-Tintern Abbey 1.According to these lines, compared to his youth, Wordsworth see himself now as: a.More responsible b.Less happy c.More aware of the world's problems

how would i graph this inequality? 14x-23

186. ## Math

'one angle is 4 times as large as another angle of the same triangle. the third angle o the triangle has a measure of 60 degress.' what are the measures of the other two angles in the triangle.

187. ## Chemistry

How do I balance these equations? KOH + NHO3 → H20 + KOH HCl + NaOH → H20 + HCl Don't have to give me the answer, just tell me how. Please, thanks.

188. ## physics

Two dogs are fighting over a stuffed animal. One pulls to the right with a force of 88 N at 18° above the horizontal. The other pulls down and to the left with a force of 74 N at 12° below the horizontal. Ignoring the weight of the toy, if the total work

189. ## college algebra

Find the maximum or minimum for f(x)=3x^2+x+1

190. ## Psychology

Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive

191. ## physics

A 90 cm length of steel wire with a diameter of 0.5 mm is stretched between the inside walls of an oven the wire is just taut with no tension when the temperature in the oven is 250 °C. What is the the tension force in the wire when the oven cools to a

192. ## physics

A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.450, respectively. (a) What horizontal pushing force is required to just start the crate moving?

193. ## calculus

integral of x*sqrt(2*x-1)

194. ## Chemistry

When 3.2 moles of Al react with excess HNO3 at STP, How many liters of H2 are formed

195. ## to Ms.Sue

Thank you so much. I bet when I'm in college I will still need your help!

196. ## PHYSICS

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. Thank you

197. ## Easy 4th Grade Math

What are things that have symmetry in a house?

198. ## calculus

I'm trying to find the intersection point of y=x-2 and y=sqrt(x). I tried letting both equations equal each other but kept coming up with the points (4,1) and (1,4) however these aren't right as the answer should be (4,2) but I am unable to get this

199. ## English

This sentence contains a dangling modifier. As a Principal Technical Editor/Writer for Alpha Communications, with over 12 years of experience, the internship would provide an opportunity to work with technical documents outside my familiar "comfort zone"

200. ## chemistry

i need to prepare 25.00 mL of a solution of a certain vitamin at a concentration of 2.00 mg/ml. how do i find the weight of the vitamin needed in the solution

201. ## English

Writeacher, Can you please check these sentences. I urgently need to know the difference in meaning among the various sentences. 1) She often makes herself pasta. (= She often makes pasta for herself) She often makes pasta herself. (= She often makes pasta

202. ## GeOmEtRy!!!

a triangle has an area of 35 square inches. The base of the triangle is 4 inches less than twice the height. What is the length of the base of the triangle?

203. ## algorithms

in Table E [N] are the names of the students, in Table L [M] are the names of the subjects, in Table T [N, M] are the grades of students for each subject. to find the student with the highest grade in the class "Math" (name of the subject given by keypad)

204. ## calculus

When region R is revolved about the line y=c, the resultant solid has a volume of 720*3.14. Find all possible values of c.

205. ## algebra

6) Write with positive exponents: [ 3-3 a-2 b5 c-3 d-4]

206. ## Chemistry

Ag+2 is generated in a lab. This is an unusual oxidation state for AG. Write the ground state electronic configuration of Ag+2 using the noble gas shortcut.

207. ## Proof! Help!

If k vertices has kC2 edges, show that (k+1) vertices has (k+1) C 2 edges

208. ## math

a box will hold seven 3-pound bags of pears. how many boxes will be needed for 90 pounds of pears?

209. ## PHYSICS

Consider a spring and block system k= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to stretch this spring 8 cm.

210. ## geography

1. What is the capital of the Scandinavian nation whose eastern border is the Soviet Union? Helsinki, Finland 2. Which will have dawn first, eastern North America or eastern South America? Eastern South America 3. What is the capital of Idaho? Is it east

211. ## Calculus

Evaluate this limit, if it exists: lim (7-x)squared - 9 / 4-x x->4

212. ## English

I need some help finding statistics and pics about how much money people save by using the online community. Help please !

213. ## chem

Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide

214. ## college/ pre-cal

a square fence 9 feet high enclosing a radio tower is 3 feet from the tower on all 4 sides. guy wires used to hold the tower in position are attached to the tower 30 feet above the ground and 13 feet from the fence on all 4 sides. How long are the guy

215. ## math

order from least to greatest 41.2 41.42 40.12

216. ## Pre- Calculus

Evaluate the trig function tan33degress

217. ## Calculus

integrate: (square root of (y^2 -121))/y dy, y>11. I got (12(square root of (y^2-121))/12 -sec^-1 (y/12) +C but it's not right. I'm not sure where I am going wrong.

218. ## English

Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion. 2) The light went off (out is possible?) all of a sudden. Can you switch off /put out

219. ## math

a student misses 2 days of school out of 25 days. what is the probability that the student will be absent on the 26th day of school

220. ## math

The table shows the total number of emails that the Wright family received this morning. Mr.Wright 7 emails Mrs.Wright 8 emails Cole 3 emails Trinity 3 emails If the family receives 7 more emails,which is the most reasonable prediction of the number of

222. ## math

The triangle above has side lengths of 18 mm and 26 mm. Which set of dimensions would produce a similar figure?

223. ## Bio II AP

Do you guys know of any online study guides about joints that I could print out? Thanks

224. ## prealgebra

what is the answer to 9*1000 + 1890

225. ## american goverment

One function that both the House and Senate share is to? . Somebody can tell me where can I found this?? Thanks

226. ## bisness studies

Three specific example of civil society organisation

227. ## geometry

if a painting has a perimeter of 36 in, and the length of the picture is 8 inches. then what is the width?

228. ## maths

multiply out (2x-3) squared eg small 2

249. ## Geology

I don't really understand this queston...Why Al ore producing and Al metal producing countries are often not the same?... thanks..

250. ## math

If there is an square 8 by 8, how many 4 sq ft tiles would i need?

251. ## math

I have 432 cards that are three and a half inches long if I put them end to end how many feet long is the line of cards

252. ## calculus

You operate a bakery. You buy cakes from a supplier who charges you $5 per cake. Government regulations dictate that you can only charge a price between$10 and $20 per cake. Your research shows that if you were to charge$x per cake, you would sell 125 -

253. ## calculus

How many horizontal tangent lines exit to the curve f(x) = x^cos(x)?

254. ## GeOmEtRy!!!

The area of a rectangle is (6x^2)^2y^3 and the width is 9xy^2. What is the length of the rectangle?

255. ## Math

1 fourths of 32 = 1 over 2 of 16? True or false? and explain.

definition of cell cycle

257. ## ASHFORD

Identify two distinct fallacies you see committed in the media.

258. ## math

if a man walked 1/12th of a mile one day 2/12ths of a mile the next day and 3/12ths of a mile the next day on what day did he walk a complete mile

259. ## Geometr

Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,-9)c(-1,-5)ana(2,-3)

260. ## Geometr

Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,-9)c(-1,-5)ana(2,-3)

261. ## any tutor

Are there any tutors on right now or people who are good with chemisty?

262. ## life orientation

what according to the basic conditions of employment act applies with regard to the contraventions ?

263. ## english

One of your aliens looks down and becomes very confused, so you tell him that there is a game going on

264. ## physics

A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.

265. ## College Physics

The lines in a grating are uniformly spaced at 1530 nm. Calculate the angular separation of the second order bright fringes between light of wavelength 600nm and 603.11nm. Answer in __mrad

266. ## College Physics

A Fraunhofer diffration pattern is produced on a screen 210cm from a single slit. The distance from the center of the central maximum to the first-order maximum is 7560 times the wavelength (lambda). Calculate slit width. Answer in __m

267. ## science

balance H3PO4 plus KOH produce K2HPO4 plus H20 and give the name of it

268. ## math

a deck surrounds a pool and the deck area is 592 square meters and deck width is 4 m. the pool dimension =(w + 4)(w + 14) l = w+10. what does w =?

269. ## Physics to bobpursley or any1 else who knows this

A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

270. ## physics

In the reaction U gives Th + He 6.88*10-13 J energy are released as the kinetic energies of the products. If the ratios of the masses Th to He is 2.4:4 find the kinetic energy of the alpha particle

271. ## English Comp

I need help on how to write a compare and contrast essay on the topic of pre-school

272. ## Calculus

find f'(x) if f(x)= (cosx)^sinx

273. ## Math

can x squared - 1 be factored?

274. ## math

Which set of dimensions would produce a right triangle?

275. ## CHEMISTRY

Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make

286. ## English

Does Victor have an obligation to the monster? Use evidence from Chapters 9-14 of Volume 2.

287. ## math

this years funderaiser picnc is $10 per person plus$2 for each person in the family. determine the number of people in a family that pays \$36?

288. ## English

Correct this: The virus may cause AIDS, cancer, or even kill. Do I need to add a word in front of cancer? Would this be correct? The virus may cause AIDS, produce cancer, or even kill.

289. ## AJ

How do the three susytems law enforcemnt, cout, and corrections interact with each other?

290. ## Math

Create a graph from this research In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading.

291. ## Math

factor x squared - x - 12

292. ## early childhood

evolutionary psychology and behavior genetics: watson

293. ## algebra 1

how do i write 9.8 multiplied by 10 to the forth power into standard notation

294. ## science

What two things do you need to know to find an objects velocity?

295. ## science

True or false: Everything that moves has velocity?

296. ## math

-12d - 9= 15d+9