1. geometry (maths)

    ABCD is a rectangle, in which BC=2AB. A point E lies on ray CD, such that CE=2BC. Prove that BE perpendicular AC.

    asked by math... on June 6, 2011
  2. PHYSICS!!!

    By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?

    asked by Molly on December 1, 2010
  3. calculus

    Prove (by using a point and a normal vector) that the plane whose intercepts with the coordinate axes are x=1, y=1, and z=1 is given by the equation x+y+z=1

    asked by Alex on October 4, 2012
  4. Chemistry

    As the number of carbons increases, the boiling point of alkanes decrease True or False

    asked by Sarah on December 6, 2014
  5. physics

    If two stones projected from the same point with the same speed but at angles pi/3 and pi/6 respectively have their ranges R₁ and R₂ then a)R1=2R2 B)R1=R2 C)R1=5R2 D)R1=25R2

    asked by fatima on June 15, 2014
  6. Alebra 2

    At what point does the terminal side of the angle (5\pi )/(6) in standard position intersect the unit circle?

    asked by Ray on February 14, 2017
  7. business

    can you give me some good examples of functional design for a health care power point I am doing?

    asked by april on January 29, 2009
  8. Health

    At what point during the course of treatment of a new patient should notice of use and disclosure of health information, required under HIPAA, be given and why?

    asked by M on November 11, 2008
  9. algebra 1

    if you go from one point to the other do you subract the a and b or do you do all points in between to find the elevation? I'm not sure what this question refers to. Are you trying to calculate slopes?

    asked by jamie on September 5, 2006
  10. chem

    Rank the following compounds in order of decreasing boiling point: KCI CO2 CH2O

    asked by Natash on December 7, 2008
  11. Physics

    A ball falling from rest is located 45 m below its starting point 3.0 s later. Assuming that its acceleration is uniform, what is its value?

    asked by Lucy on February 11, 2008
  12. calculus

    Given that x3-axy+3ay2=3a3 Find the equations for the tangent and normal lines at point (a,a)

    asked by mei peng on October 6, 2010
  13. mathURGENT!!!!!!

    what is the greatest value of m such that 25!/5^m is an integer? hint: the exclamation point means "factorial". 3!=3*2*1=6 4!=4*3*2*1=24 etc. please answer and explain how you got it!!!!please???

    asked by don on March 8, 2013
  14. Algebra 1

    Name the constant of variation for each question. Then determine the slope of the line that passes through each pair of point. y=2x

    asked by Quiona on December 9, 2007
  15. maths

    BM and CN are perpendicular to a line passing through the vertex A of a triangle ABC. IF L is the mid point of BC. PROVE THAT,LM=LN

    asked by Aman on December 11, 2017
  16. Science

    How many grams of ammonium nitrate nedd to be added to 500g of water so that the freezing point becomes -8.3 °C?

    asked by Christ on February 14, 2017
  17. physics

    What magnitude point charge creates a 13000 N/C electric field at a distance of 0.220 m?

    asked by taryn on February 3, 2013
  18. Math- AP Calc

    If 3x+xy+4y=8, what is the value of d^2y/dx^2 at the point (1,1)? My work: 3+(x)(dy/dx)+(y)+4(dy/dx)=0 dy/dx(x+4)=-3-y dy/dx=-3-y/x+4 2nd Dervative: (x+4)(0-dy/dx)-(-3-y)/(x+4)^2 (x+4)(-(-y-3/x+4))-(-3-y)/(x+4)^2 (x+4)(y+3)/(-x+4)+(y+3)/(x+4)^2 *Mult.

    asked by David on October 6, 2014
  19. true

    find the resultant of two vectors of 3units and 4units acting at a point,o at an angle of 45 degrees with each other

    asked by true on November 14, 2016
  20. Physics

    A stone is thrown straight up. To reach a height of 6.49 m above its release point, what must its initial speed be in m/s?

    asked by Ted on October 4, 2012
  21. CALC HELP!

    Find an equation of the tangent line to the graph of y= x+ (4/x) at the point (4,5). I can't figure out the answer to this. It's supposed to be y=3/4x +2 but I can't get that.

    asked by em on March 9, 2016
  22. chemistry

    What is the effect of an insoluble impurity, such as sodium sulfate, on the observed melting point of a compound?

    asked by kelly on June 12, 2008
  23. physics

    A stone is thrown straight up. To reach a height of 6.74 m above its release point, what must its initial speed be in m/s

    asked by Conner on October 4, 2012
  24. Geometry

    Given: AB ∥ CD , BC ∥ AD , BD ∩ AC = O, M∈BC ; N∈AD Prove: BM = ND BD and AC are diagonals MN goes through the center which is also where BD and AC bisect and point O Can U Guys Put the Answer it would be a BIG HELP, Thanks (:

    asked by Serina on March 19, 2017
  25. Calculus

    Can someone show how to solve this problem Find the equation of the tangent line to the curve given by, x=3e^t y=5e^-t at the point where t=0 Thanks!

    asked by Henry on August 5, 2015
  26. PYSCIS!!!!

    By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?

    asked by Molly on December 1, 2010
  27. maths

    a boy walks 1260m on a bearing of120 degree, how far south is he from his starting point?

    asked by adebimpe on May 19, 2014
  28. science

    How does grazing, septic systems and recreational boating contribute to non-point source pollution ?

    asked by anonymous on March 19, 2012
  29. Physics

    A 2.0-kg rock falls from a height of 25 m to a point 20 m above the ground. How much potential energy does it lose? GIVEN: mg = 2.0 kg h/d = 5 m PE = mgh PE = (2)(5) PE = 10 J

    asked by Priscilla on January 4, 2010
  30. physics

    three forces of 10N,30N and 50N act at a point at 120° to each other.Find their resultant.

    asked by Anonymous on December 28, 2015
  31. Math

    Find an equationof the line having the given slope and containing the given point. Express your answer in the form y=B or y=mx+b M=0,(0,5) The equation is y=

    asked by Pam on February 10, 2014
  32. Medical

    At what point during the course of treatment of a new patient should notice of use and disclosure of health information, required under HIPAA, be given and why?

    asked by Daliz on April 1, 2010
  33. Information Technology

    I'm suppose to do Computer System Scenarios. There are 4 of them to do each asking to come up with IT solutions and I have no idea where to begin can someone point me in the right direction? Thanks

    asked by Jen on December 9, 2007
  34. math

    If the solution to the linear programming problem exists, then it has to be at a corner point.it is true or false?

    asked by sateko on April 18, 2011
  35. Physics

    A downward force of 5.1 N is exerted on a -7.3 mcirco C charge. What is the magnitude of the electric field at this point?

    asked by Heidi on February 9, 2013
  36. Calculus

    Find the intercept, relative extrema, point of inflection, and asymptotes of the function(if they exist)of: y= 3[(x-1)^(2/3)] - [(x-1)^2]

    asked by Jands on January 10, 2011
  37. Calculus

    For the question "Determine the equation of the tangent to the curve y = xtanx at the point with x-coordinate π." how is the answer -πx + y + π2 = 0?

    asked by Sara on March 9, 2015
  38. Calculus

    Find the intercept, relative extrema, point of inflection, and asymptotes of the function(if they exist)of: y = (x^3)/(x^2 - 4)

    asked by Jands on January 10, 2011
  39. Math

    I have the following question on a warm-up : What is the equation of the line that passes through the point {-2, 2} and has a slope of 5? Can someone help me to figure out the answer.

    asked by Pam on December 14, 2018
  40. Math

    Dwayne passes the 0 point running 4 meters per second to the right.Where is he 5 seconds later?Write a number sentence.

    asked by kristina on January 10, 2010
  41. Math

    Point A(6,-2) is reflected over the x-axis. Write the coordinates of A'. The anwser is (6,2) but I don't understand it can someone explain?

    asked by Memed on October 26, 2018
  42. Chemistry

    Consider the titration: .30 M HCl versus .30 M methlamine (CH3NH2). What is the concentration of CH3NH3+ at the equivalence point?

    asked by Amy on November 29, 2010
  43. calculus

    Does any tangent to the curve y=ãx cross the x-axis at x= -1? If so, find an equation for the line and the point of tangency. If not, why not?

    asked by natalia on March 1, 2010
  44. Calculus

    Find the intercept, relative extrema, point of inflection, and asymptotes of the function(if they exist)of: y = (x^2 + 1)/(x^2 - 9)

    asked by Jands on January 10, 2011
  45. Calculus

    What is the point of inflection of the function f(x)=x^3-8x^2+5x+50? Is the local extrema at f(1/3)=50.8 max and f(5)=0 min? For the second derivative I got f(x)=6x-16 and then got x=16/6 when set to zero.

    asked by Bill on October 24, 2012
  46. Science

    (a) What magnitude point charge creates a 20000 N/C electric field at a distance of 0.210 m?

    asked by Akos on August 27, 2013
  47. geometry!!! please help me!!!!

    ABC is a triangle with ∠ACB=45∘. D is a point on AC such that AD=2DC. If ∠ADB=60∘, what is the measure (in degrees) of ∠CAB?

    asked by glo on May 7, 2013
  48. Calculus (RATE OF CHANGE)

    Estimate the instantaneous rate of change at the point indicated. (Round your answer to four decimal places.) y(x) = 1/ x + 2; x = 2

    asked by Jeff Henderson on February 21, 2017
  49. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

    asked by Alyssa on October 6, 2010
  50. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

    asked by Alyssa on October 6, 2010
  51. computers

    how can i make a website on telecommunication and its effects on society with the help of share point designer 2007

    asked by rabiyah on April 1, 2011
  52. health

    need help with power point for hcr/210 final project records management presentation

    asked by dawn on May 17, 2013
  53. Math 20-1

    The most convenient test point to use to determine if the points in a region defined by y

    asked by Alex on February 1, 2015
  54. Pre-Calculus

    I need to write a polynomial of the smallest degree with roots 5 and 6 and the answer can't have parentheses. Can someone point me in the right direction. I have several of these to do.

    asked by Sandra on September 1, 2011
  55. Calculus

    Find the equation of the line through the point (3, 5) that cuts off the least area from the first quadrant? y-A=B(x-C) i know its slope is -3/5 which is B. But what are the values of A and C?

    asked by Asfand on November 13, 2016
  56. Math

    Write the equation of the line in slope intercept form that is parallel to y=-2+11, and passes through the point (4,2).

    asked by Kat on January 24, 2010
  57. US History Colony Develpoment

    Did the different circumstances of Maryland and Virgina's founding affect the course of their respect development? How? Please point me in the right direction.

    asked by Mia on May 24, 2009
  58. math

    A straight line passes through the point (-1,2) and its distance from the origin is 1 unit. Find the equation

    asked by saurav on March 15, 2015
  59. math

    Find the equation of a hyperbola which is generated by a point that moves so that the difference of its distance from the points (-4,1) and (2,1) is 4.

    asked by coni on December 17, 2008
  60. chemistry

    lowest+freezing+point+of+Kbr+AlNO33+CH3COONa+NaNO2+MgCl2+of+same+molality

    asked by deepak on March 29, 2013
  61. Calculus 1

    Use implicit differentiation to find an equation of the tangent line to the curve at the given point. x^2+y^2=(2x^2+4y^2−x)^2 (0, 0.25) (cardioid)

    asked by TayB on March 9, 2015
  62. calculus

    use implicit differentiation to find an equation of the tangent line to the curve at the given point. 9x^2+xy+9y^2=19, (1,1) (ellipse)

    asked by lori on February 8, 2013
  63. calculus

    Find the rate of change of the distance between the origin and a moving point on the graph y = x^2 + 8 if dx/dt = 8 centimeters per second.

    asked by ale on October 6, 2010
  64. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

    asked by Alyssa on October 6, 2010
  65. maths

    'A ship sales for 60km on bearing 040 degrees.How far east of it is the starting point?'

    asked by rajini on July 29, 2015
  66. science

    True or false, and explain answer. Boiling point is the temperature at which a solid melts

    asked by helpme on March 12, 2019
  67. math 115

    I need help please, Find an equation of the line having the given slope containing the give point m=5/6(5,-8) 5/6+ 40/6 is this correct and if not can you explain to me what I am doing wrong please

    asked by Sydney on September 20, 2010
  68. OCHEM DR BOB PLEASE HELP!!!!!!!!!1

    Why is it possible to use melting point to distinguish the different stereochemistry of the products? (Hint: what is the relationship of the different stereoisomers of the product?)

    asked by JEN on August 15, 2012
  69. algebra 2

    write the standard form of the equation of the circle that passes through the given point (8,0) and whose center is the origin

    asked by Rache on July 10, 2011
  70. Chemistry

    Determine the freezing point of an aqueous solution containing 10.50 g of magnesium bromide in 200.0 g of water.

    asked by Zac on August 31, 2015
  71. chem

    (R)-(+)- limonene has a boiling point of 176 C. What made it possible to steam distill it at 100C? - is it because you could have different weights of each one?

    asked by Jason on November 24, 2008
  72. heeeeeelp math

    is a point outside of circle Γ. The tangent from P to Γ touches at A. A line from P intersects Γ at B and C such that ∠ACP=120 ∘. If AC=16 and AP=19, then the radius of Γ

    asked by clavin on June 7, 2013
  73. trigonometry

    how do i determine the point of intersection of a circle with a radius of 14 and the line coming in at a 35 degree angle

    asked by james on June 6, 2013
  74. 1st grade

    Point value of a hexagon is six. trapezoid is 3. triangle is 1. Rhombus is 2. my homework says, shape, number and total. what do I do? thanks.

    asked by Julie on August 25, 2010
  75. Math

    The quadratic function f is negative only on the open interval (−2, 1/4 ) and its graph passes through the point (−1, −5). Find a,b, and c.

    asked by Juan Fernandez on January 20, 2017
  76. Chemisrty

    What volume of 0.740 M , HCl in milliliters, is required to titrate 2.05 g of Na2CO3 to the equivalence point?

    asked by Julian on October 4, 2015
  77. physics

    Using gauss's law,calculate the electricfield at a distance r=20cm from a point charge q=4microcoulomb.

    asked by Ayodele on April 11, 2010
  78. calculus

    find the rate of change of the distance between the origin and a moving point on the graph of y=x^2+2 if ds/dt=5 centimeters per second.

    asked by norma on September 24, 2010
  79. calculus

    find the rate of change of the distance between the origin and a moving point on the graph of y=x^2+2 if ds/dt=5 centimeters per second.

    asked by norma on September 24, 2010
  80. physics

    Three point charges are arranged as shown. − + + −6.1 nC and 1.6 nC .4m apart 1.6 nC and 3 nC .088m apart What is the electric field strength at 1.8 m to the right of the mid

    asked by amanda and leah on April 8, 2012
  81. Physics

    If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds? A) 1.9 x 1020 e

    asked by John on January 21, 2014
  82. Physics: Waves in Media

    By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?

    asked by Amanda on December 7, 2010
  83. equation on tangent of a curve need help

    find the equation of a tangent of a curve at point(1,3) x^2.y^3+y^2.x^4+4x^2-14=0,i tried differentiate it n also applying this formula y=mx+b.bt i gt confuse

    asked by edward on August 27, 2015
  84. Science... plz help~!

    If a 40 kg person is accelerating at 10 m/s^2, then the magnitude of the force acting on him or her is 400 N. (1 point) True False

    asked by Gabby on March 12, 2014
  85. calculus

    If x = 18cos^3θ and y = 18sin^3θ, find the total length of the curve swept out by the point (x,y) as θ ranges from 0 to 2π.

    asked by Sam on May 7, 2017
  86. algebra 2

    how do you do this? find equations in standard form of the lines through point P that are (a) parallel to, and (b) perpendicular to line L: 1) P(0,-4); L: 2y=x 2)P(2,0);L:x+2y=3 3)P(-4,1); L: y+2=0

    asked by christina on October 2, 2008
  87. math HELP!!!!!!!!!

    1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3). (1 point)(–2, 4) and (6, 6) (2, 4) and (6, 6) (–2, 4) and (6, –6) (2, –1) and (–3, 3)

    asked by ? on November 7, 2012
  88. Physics

    a boat sails 150km N60°E, then 100km West. What is it's displacement from its starting point?

    asked by Victor on January 25, 2017
  89. appliance

    What is the name of the SCR or TRIAC triggering system that triggers the output device at the same point on each AC cycle?

    asked by vit on August 14, 2012
  90. Art

    This is where an interior designer does most of her work. (1 point) in a factory at the client's home in an office in a studio

    asked by RainbowDragon on January 14, 2013
  91. chemistry

    Why should the volume of standard base (or acid) needed to reach the equilvalence point in a titration be more than 10.0 mL?

    asked by redgy on March 20, 2011
  92. chemistry

    Why is it possible to use melting point to distinguish the different stereochemistry of the products? (Hint: what is the relationship of the different stereoisomers of the product?)

    asked by Jen on August 15, 2012
  93. math

    a rope is 120 ft long and the water is 20 ft deep. how far is the anchor from a point directly below the boat?

    asked by lee on January 26, 2011
  94. Math - Geometry

    Suppose point P and lines l and m all lie on the same plane. If the distance from P to l and from P to m is 3, which of the following could be true? A)l is parallel to m B)l is perpendicular to m C)l=m D)any of these

    asked by Thamara on December 23, 2009
  95. chemistry

    What volume of 0.115M NaOH is required to reach the equivalence point in the titration of 25.00 mL of 0.200M of HF? Ka(HF)=7.4 x 10^-4

    asked by csb on December 5, 2010
  96. Chemistry

    What is the freezing point of a solution that contains 10.0 g of glucose (C6H12O6) in 100 g of H2O? Kf for water is 1.86oC/m

    asked by Sam on July 17, 2012
  97. scince

    Which of the following is not an example of a physical property of a substance? density combustion solubility freezing point thx

    asked by hi on November 14, 2017
  98. chemistry

    what is the freezing point depression of water, benzene, acetic acid, ethanol and clyclohexane?

    asked by jarlyn jane ejares on January 27, 2014
  99. com 150 week 6

    body parsgraphs and topic outline and working references list check point

    asked by tasha on October 8, 2008
  100. maths

    The perpendicular bisector of the line joining the points D(1,2) and E(5,4) meets the y-axis at the point (0,k).calculate k

    asked by vmu on November 27, 2011

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100
  101. 101
  102. 102
  103. 103
  104. 104
  105. 105
  106. 106
  107. 107
  108. 108
  109. 109
  110. 110
  111. 111
  112. 112
  113. 113
  114. 114
  115. 115
  116. 116
  117. 117
  118. 118
  119. 119
  120. 120
  121. 121
  122. 122
  123. 123
  124. 124
  125. 125
  126. 126
  127. 127
  128. 128
  129. 129
  130. 130
  131. 131
  132. 132
  133. 133
  134. 134
  135. 135
  136. 136
  137. 137
  138. 138
  139. 139
  140. 140
  141. 141
  142. 142
  143. 143
  144. 144
  145. 145
  146. 146
  147. 147
  148. 148
  149. 149
  150. 150
  151. 151
  152. 152
  153. 153
  154. 154
  155. 155
  156. 156
  157. 157
  158. 158
  159. 159
  160. 160
  161. 161
  162. 162
  163. 163
  164. 164
  165. 165
  166. 166
  167. 167
  168. 168
  169. 169
  170. 170
  171. 171
  172. 172
  173. 173
  174. 174
  175. 175
  176. 176
  177. 177
  178. 178
  179. 179
  180. 180
  181. 181
  182. 182
  183. 183
  184. 184
  185. 185
  186. 186
  187. 187
  188. 188
  189. 189
  190. 190
  191. 191
  192. 192
  193. 193
  194. 194
  195. 195
  196. 196
  197. 197
  198. 198
  199. 199
  200. 200
  201. 201
  202. 202
  203. 203
  204. 204
  205. 205
  206. 206
  207. 207
  208. 208
  209. 209
  210. 210
  211. 211
  212. 212
  213. 213
  214. 214
  215. 215
  216. 216
  217. 217
  218. 218
  219. 219
  220. 220
  221. 221
  222. 222
  223. 223
  224. 224
  225. 225
  226. 226
  227. 227
  228. 228
  229. 229
  230. 230
  231. 231
  232. 232
  233. 233
  234. 234
  235. 235
  236. 236
  237. 237
  238. 238
  239. 239
  240. 240
  241. 241
  242. 242
  243. 243
  244. 244
  245. 245
  246. 246
  247. 247
  248. 248
  249. 249
  250. 250
  251. 251
  252. 252
  253. 253
  254. 254
  255. 255
  256. 256
  257. 257
  258. 258
  259. 259
  260. 260
  261. 261
  262. 262
  263. 263
  264. 264
  265. 265
  266. 266
  267. 267
  268. 268
  269. 269
  270. 270
  271. 271
  272. 272
  273. 273
  274. 274
  275. 275
  276. 276
  277. 277
  278. 278
  279. 279
  280. 280
  281. 281
  282. 282
  283. 283
  284. 284
  285. 285
  286. 286
  287. 287
  288. 288
  289. 289
  290. 290
  291. 291
  292. 292
  293. 293
  294. 294
  295. 295
  296. 296
  297. 297
  298. 298
  299. 299
  300. 300
  301. 301
  302. 302
  303. 303
  304. 304
  305. 305
  306. 306
  307. 307
  308. 308
  309. 309
  310. 310
  311. 311
  312. 312
  313. 313
  314. 314
  315. 315
  316. 316
  317. 317
  318. 318
  319. 319
  320. 320
  321. 321
  322. 322
  323. 323
  324. 324
  325. 325
  326. 326
  327. 327
  328. 328
  329. 329
  330. 330
  331. 331
  332. 332
  333. 333
  334. 334
  335. 335
  336. 336
  337. 337
  338. 338
  339. 339
  340. 340
  341. 341
  342. 342
  343. 343
  344. 344
  345. 345
  346. 346
  347. 347
  348. 348
  349. 349
  350. 350
  351. 351
  352. 352
  353. 353
  354. 354
  355. 355
  356. 356
  357. 357
  358. 358
  359. 359
  360. 360
  361. 361
  362. 362
  363. 363
  364. 364
  365. 365
  366. 366
  367. 367
  368. 368
  369. 369
  370. 370
  371. 371
  372. 372
  373. 373
  374. 374
  375. 375
  376. 376
  377. 377
  378. 378
  379. 379
  380. 380
  381. 381
  382. 382
  383. 383
  384. 384
  385. 385
  386. 386
  387. 387
  388. 388
  389. 389
  390. 390
  391. 391
  392. 392
  393. 393
  394. 394
  395. 395
  396. 396
  397. 397
  398. 398
  399. 399
  400. 400
  401. 401
  402. 402
  403. 403
  404. 404
  405. 405
  406. 406
  407. 407
  408. 408