1. Math

    how do i solve this equation with out using the quadratic formula: 5x^2 +18x +11 = 0

    asked by Lucyy on April 13, 2009
  2. algebra

    I need someone to explain the steps in finding all zeroes of an equation x^4-6x^2-7x-6=0

    asked by lee on November 29, 2012
  3. Math

    Using the quadratic formula to solve for x in the equation x2 = 7x + 8 results in what value(s)?

    asked by Susie on May 30, 2008
  4. Topology

    Find the Cartesian form of the equation, r3 = 3r cosØ.

    asked by Dilip on January 30, 2013
  5. math - question

    Under what situation might one or more solutions of a rational equation be unacceptable?

    asked by red on February 28, 2009
  6. Algebra

    find the center (h,k) and radius r of the circle with the given equation: x^2 + y^2 + 6x - 8y = 56

    asked by coried on August 11, 2009
  7. Maths

    Analyse the following equation using rotational axis 4x^2 + 9y^2 - 8x + 36y + 4 = 0

    asked by Kennedy on December 17, 2016
  8. Algebra

    Find the real solutions of the equation by graphing. 6x^3-2x=-9x^2

    asked by Anonymous on December 9, 2012
  9. college algebra

    writing equation in quadratic form then solve 36/b-17=-24/b+1

    asked by Joe on March 8, 2009
  10. Math

    you have 9 terms, the first is 0 and the 9th is 12 one of the outputs is 27 what is the equation for the pattern?

    asked by Ted on February 8, 2009
  11. Algebra 2 (Math)

    What is the equation, in standard form, of a parabola that contains the following points? (-2, -20), (0, -4), (4, -20)

    asked by Reese on December 3, 2015
  12. chemistry

    what is the charge balance equation for acetic acid?

    asked by lia on March 30, 2016
  13. math

    v = h(6 - (1/3)(2 - (2 h/5))^3 ) i try to solve this equation and i got (350+4h^2)/75 im not sure if this is correct please check it for me!

    asked by kk on February 19, 2009
  14. kampala

    given that equation 2logx +log2= log5+10.solve for x

    asked by Albino manyiel on December 4, 2015
  15. Algebra

    4x+2>6x-1 > This should be a greater then or equal to sign in the equation. I am getting -3/-2 The book says 3/2

    asked by G on March 5, 2008
  16. Alegebra

    Use the intercepts to graph the equation. 4x-12=3y It should be pair. is the answer (4,3)

    asked by Elaine on March 6, 2009
  17. Math

    Find the equation of the parabola with directix y=3 and focus (5,7)?

    asked by Anna on September 22, 2008
  18. Algebra

    f(x) varies inversely with x and f(x) = –10 when x = 20. What is the inverse variation equation?

    asked by Sara on October 27, 2016
  19. math

    find the constant of proportionality(k) from the equation 2y=108y

    asked by gladys on April 10, 2016
  20. algebra 2

    What is the axis of symmetry for y=x^2-8x+8 equation ? Be sure to use correct notation

    asked by kiyanna on December 7, 2012
  21. Math

    x^3+2x^2-x=2 Find the real number of solutions of the equation

    asked by Linda on December 7, 2011
  22. Solid mensuration

    Find an equation of the circle tangent to x + y = 3 at (2,1) and with center on 3x - 2y - 6 = 0

    asked by Jane on January 30, 2012
  23. algebra

    Solve the equation below. Please show all of your work log_7(x + 3/7) = -2

    asked by anon on December 17, 2011
  24. math

    determine the equation of the graph in the form y=acos(bx)

    asked by Anonymous on December 14, 2016
  25. Math

    For what values of r does the function y = erx Satisfy the equation y'' + 5y' + 6y = 0?

    asked by Mathematics on January 16, 2016
  26. Math

    Solve the equation e^x-10=10. Do I have to change it to log form? What do I do after that?

    asked by Cheezel on May 30, 2016
  27. Math

    I need help solving this equation using the Factoring Completely method. X⁴-x³

    asked by Phil on February 1, 2013
  28. math

    How would I find the a for the equation y= a(x-h)^2+k. I'm looking at a graph, and I can solve for everything except for a. What is it supposed to be?

    asked by Erica on March 6, 2008
  29. Math -algerbra

    can someone show me how to solve an equation algerbracially x=sqrtx+10+2

    asked by anonymous on February 22, 2013
  30. Calculus

    The particular solution of the differential equation dy/dt=2*y for which y(0) = 60 is y = 60e2t y = 60 e0.5t y = 59 + et y = 30et

    asked by nan on March 10, 2016
  31. math

    g(x)= 1-2x-3, x< or equal to 0. x-18, x>6 find g(6). so I used the first equation. 1/2(6)-3 and I got 0, but that's not the right answer so I'm not sure what I'm doing wrong.

    asked by amber on August 26, 2011
  32. Urgent for Chem!

    need help in balancing equation for NO2 + O2 -> NO + O3 Please help it may look balance but it is not. This is a tricky one

    asked by Anynamous on March 15, 2008
  33. chemistry

    Why must a balanced chemical equation be used when determining Keq?

    asked by kelly on June 3, 2009
  34. Math

    Solve the equation by the substition method. x-y=11 3x+10y=-6?

    asked by Please help on December 6, 2011
  35. Algebra

    find the center (h,k) and radius r of the circle with the given equation: x^2 + y^2 + 6x - 8y = 56

    asked by coried on August 11, 2009
  36. HELP ! Algebra

    Solve the quadratic equation by completing the square. (-x^2 + 6x + 10 = 0)

    asked by Robert on November 16, 2012
  37. math

    Let 2^a = 5 and 2^b = 10. Using exponent rules, solve the equation in terms of a and b. 10^x =(1/64)

    asked by Katie on March 3, 2013
  38. pre-calculus

    solve equation show work. log_2(x^2+47)=7

    asked by Sara on January 11, 2012
  39. 10th grade

    What is the equation for when vinegar reacts with baking soda?

    asked by Ashlyn on February 17, 2009
  40. math

    find the equation of the hyperbola with vertices (4,0), (-4,0) and focus (7,0)

    asked by laura on August 29, 2016
  41. Algebra

    How do I solve this equation? 1+1/x over x over 1/x-1 By the way this is a Complex Rational Expression.

    asked by Anonymous on May 31, 2016
  42. Engineering Maths

    Pleas help solve the ffg. differential equation: dy/dx-(1+1/x)y=y^2

    asked by Taldil on February 22, 2013
  43. math

    Determine the equation of the inverese of the quadratic function f(x)=x^2-4x+3

    asked by Melissa on October 22, 2011
  44. Alg III

    Solve each absolute value equation. |x - 3| = 1 Okay here is what I did: x - 3 = 1 x = 4 or x = -4 The book says {2,4} I'm very lost. Can someone help me?

    asked by Chopsticks on August 20, 2009
  45. math

    10/3+2*4=8 Insert grouping to make the equation true

    asked by gina on September 20, 2011
  46. math

    USING FORMULAR METHOD SOLVE D EQUATION(M-3)²=121

    asked by Anonymous on January 26, 2013
  47. Math

    how do you know whether an equation is true, false, or an open sentence?

    asked by Angie on February 16, 2009
  48. algebra

    How do I solve a linear equation using equality properties?

    asked by mom on November 14, 2011
  49. Math

    Find three ordered pairs that satisfy the equation. y = x+2 (0,1)(0,3)(2,0)

    asked by Help on October 28, 2011
  50. algebra

    Find the real solutions of the equation. -8x^3-17x^2+7x=0

    asked by Lee on January 4, 2013
  51. Math help ;-;

    Solve the equation. Check your answer. 5x-4(x+9)=2x-3 can anyone help me how to do this plz ;-; sorry

    asked by Leo on May 24, 2016
  52. Math -algerbra

    can someone show me how to solve an equation algerbracially x=sqrtx+10+2

    asked by anonymous on February 22, 2013
  53. Pre-cal

    Solving the principle values of x of the equation 4cos^2x-3=0

    asked by Wendy on May 25, 2016
  54. pre calculus

    how do you use e^a+bi = e^(cos b + i sin b) to derive the equation eπi + 1 = 0

    asked by Anonymous on November 26, 2016
  55. math

    Solve the following equation. x^2 + 28x = 0 x = 1 (smaller value) x = 2 (larger value)

    asked by latesha on December 17, 2011
  56. Math

    I need 3 ordered pairs of points that would be solutions to this equation. Can anyone help please, thanks! 4x - y = 7

    asked by Robert on February 19, 2009
  57. Algebra

    Use the sqaure root property to solve the equation. 7x^2-4=0

    asked by Jaya on October 23, 2011
  58. calculus

    Solve the equation for x. e^ax=Ce^bx, where a cannot equal b Can someone explain this pleaseee!

    asked by Sarah on September 23, 2008
  59. Algebra

    I need 3 ordered pairs of points that would be solutions to this equation. Can anyone help please, thanks! 4x - y = 7

    asked by Tia on February 18, 2009
  60. MATH HELP!

    solve equation exactly over interval (0, 2ð) sin(x)= 1-2sin^2(x)

    asked by Luis on October 25, 2011
  61. Math

    Solve the equation by the substition method. x-y=11 3x+10y=-6?

    asked by Please help on December 6, 2011
  62. Math-Algebra

    i don't understand how to graph an equation. can anyone help me please? i'll greatly appreciate it. Example: 3x+4y=12

    asked by Amy on February 12, 2009
  63. Precal/Math

    How do i find the equation in the form: y=a(sqrt b(x-h))+k From the points (-5,3) (-4,-1) (-1,-5)

    asked by Bobbie on April 5, 2016
  64. algebra 2

    if 6 is a solution of the equation g(w)=1, give a point on a graph of g.

    asked by taz manian on September 25, 2008
  65. Chemistry

    How do you balance the equation? MnO4^-1(aq) + C2O4^-2(aq)-> Mn^+2(aq) + CO2(g)

    asked by Cris on November 14, 2012
  66. math

    What is the equation of the chord of the circle x^2+y^2=16, passing through (2,3). Pls help!

    asked by ranju on December 25, 2015
  67. Math

    How do you solve the following equation x2 - 5x = 14 x2 - 5 x - 14 = 0 (x - 7) (x + 2) = 0 x = 7 or x = -2 How do I explain this to my son who was not taught this way???

    asked by Jake on September 9, 2008
  68. Math

    find the equation of a parabola that has a vertex of (-2,-3) and contains the point (4,1).

    asked by Isaiah on March 28, 2016
  69. Math 8R - HELP!

    Multi-Step Equations Systems of Equation 2x = y 4x - y = -2 please help!!!!!

    asked by Laruen on January 29, 2013
  70. math

    Find an equation of the circle that has center (-3,6) and passes through (4,-1)

    asked by . on November 2, 2016
  71. Topology

    5. Find the Cartesian form of the equation, r3 = 3r cosØ.

    asked by Dilip on January 30, 2013
  72. Algebra

    How would I express what is below in the exponential form of an equation? Let x = 1og_2 1/8

    asked by Shelly on August 2, 2009
  73. chem

    for the equation: propane + bromine how do I know on which carbon the Br would attatch itself to.

    asked by Lena on March 13, 2009
  74. Calculus

    Find the equation of the tangent to the curve y=sin^-1 (1/x) at x=2. Please help!

    asked by Michael on October 19, 2011
  75. Math

    The following equation relates u and t. 3t=(1)/(7+u) Solve for u as an explicit function of t.

    asked by Sarah on September 9, 2016
  76. Math

    How can one solve this equation for t with decimals? Y = 1.3 + 18.8 t - (g/2) t^2 = 0 (Assume g = 9.8 m/s^2, the value on Earth)

    asked by Anonymous on January 21, 2012
  77. Algebra

    Solving for systems of equation using the elimiation method. 3x-2y=x-6 3(x+2y)=3

    asked by G on April 3, 2008
  78. precalc

    p(x)=x^3 -6x^2 +13x -10. find all the solutions to the equation p(x)=0. i am not allowed to use -b/2A

    asked by help! on April 17, 2016
  79. algebra

    what is the equation in standard form of a parabola that contain the following points? (-2,-20),(0,-4),(4,-20) Please Help

    asked by Lee on October 29, 2012
  80. Math

    How do you solve this equation: 3x-5*√x=2. (√= Is a square root sign)

    asked by Anonymous on August 29, 2011
  81. math

    Given that the roots of the equation 3x^2+x+2=0 are a and b, show that 27a^4=11a+10.

    asked by Thomas on December 30, 2016
  82. Pre Calc

    Solve the equation on the interval [0,2pi). cos2x=(*2/2)

    asked by Megan on August 26, 2009
  83. math

    HELP me find the angles from the following equation (4cotx+3)(cotx-1) = 0

    asked by beracah on May 21, 2016
  84. algebra 2

    Hey could you help me with this: What is the absolute value of the product of the solutions of the equation below? (x+2)^2=16

    asked by Ian on February 24, 2009
  85. ALGEBRA

    Find three ordered pairs that satisfy the equation. y=5x+8

    asked by daniel on December 18, 2011
  86. Chemistry

    How would you balance this equation: CuS + KCl = ? Can you explain.

    asked by Mary on January 28, 2009
  87. Math

    The roots of the equation 4x^2+4x-5 = 0 can be written in the form x = -1+-*SqrtA/2 The value of A is, how exactly do I do this?

    asked by -Untamed- on December 7, 2011
  88. math

    what is it called in math when u have an equation like a+b=c and u are solving for b so you change it to b=c-a?

    asked by Rebecca on December 18, 2011
  89. math

    -x squared -2x +4 solve quadratic equation by factoring

    asked by michell on February 21, 2013
  90. Pre Calc

    Solve the equation on the interval [0,2pi). cos2x=(*2/2)

    asked by Megan on August 27, 2009
  91. phy 105

    Derive the equation T = 2pi(l/g)^1/2. That's period of motion.

    asked by Zebulon on December 9, 2015
  92. Chemistry

    Using equation only. Show how tetraoxosulphate(IV) can be prepared industrially

    asked by UMEADI on December 31, 2016
  93. college algebra, Please help!!

    solve the following equation 9^x-1 = 144(6x) please show work.

    asked by confused on November 28, 2012
  94. Algebra!

    How do I graph a linear equation? What do I place for each axis?

    asked by Angie on October 8, 2008
  95. Algebra 2 Rational Equations

    What is the solution set of the equation? I know the answer is {-1} I just don't know how to get there. X^2-16 x-3 --------- = ------- -1 (x+4)(x+2) (x+2)

    asked by Josh on December 6, 2012
  96. Algebra 2

    Which of the following could be the equation of the graph shown below? Check all that apply.

    asked by Isaac Rosario on November 2, 2016
  97. HELP - math

    8+4*2+7/3=20 Where do I place parentheses to make this equation correct?

    asked by aly on August 26, 2009
  98. Math

    Which equation(s) represents a proportional relationship? A) y = 5 + x B) y = 4x C) y = 7x² D) y = 2 - x

    asked by Sara on October 21, 2016
  99. Calculus

    Solve the following equation on the interval [0,2pi) if sin = -0.29?

    asked by Ed on August 21, 2016
  100. chemistry

    symbol used in a chemical equation to indicate the phrase with react with?

    asked by kate on February 3, 2009

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
  409. 409
  410. 410
  411. 411
  412. 412
  413. 413
  414. 414
  415. 415
  416. 416
  417. 417
  418. 418
  419. 419
  420. 420
  421. 421
  422. 422
  423. 423
  424. 424
  425. 425
  426. 426
  427. 427
  428. 428
  429. 429
  430. 430
  431. 431
  432. 432
  433. 433
  434. 434
  435. 435
  436. 436
  437. 437
  438. 438
  439. 439
  440. 440
  441. 441
  442. 442
  443. 443
  444. 444
  445. 445
  446. 446
  447. 447
  448. 448
  449. 449
  450. 450
  451. 451
  452. 452
  453. 453
  454. 454
  455. 455
  456. 456
  457. 457
  458. 458
  459. 459
  460. 460
  461. 461
  462. 462
  463. 463
  464. 464
  465. 465
  466. 466
  467. 467
  468. 468
  469. 469
  470. 470
  471. 471
  472. 472
  473. 473
  474. 474
  475. 475
  476. 476
  477. 477
  478. 478
  479. 479
  480. 480
  481. 481
  482. 482
  483. 483
  484. 484
  485. 485
  486. 486
  487. 487
  488. 488
  489. 489
  490. 490
  491. 491
  492. 492
  493. 493
  494. 494
  495. 495
  496. 496
  497. 497
  498. 498
  499. 499
  500. 500
  501. 501
  502. 502
  503. 503
  504. 504
  505. 505
  506. 506
  507. 507
  508. 508
  509. 509
  510. 510
  511. 511
  512. 512
  513. 513
  514. 514
  515. 515
  516. 516
  517. 517
  518. 518
  519. 519
  520. 520
  521. 521
  522. 522
  523. 523
  524. 524
  525. 525
  526. 526
  527. 527
  528. 528
  529. 529
  530. 530
  531. 531
  532. 532
  533. 533
  534. 534
  535. 535
  536. 536
  537. 537
  538. 538
  539. 539
  540. 540
  541. 541
  542. 542
  543. 543
  544. 544
  545. 545
  546. 546
  547. 547
  548. 548
  549. 549
  550. 550
  551. 551
  552. 552
  553. 553
  554. 554
  555. 555
  556. 556
  557. 557
  558. 558
  559. 559
  560. 560
  561. 561
  562. 562
  563. 563
  564. 564
  565. 565
  566. 566
  567. 567
  568. 568
  569. 569
  570. 570
  571. 571
  572. 572
  573. 573
  574. 574
  575. 575
  576. 576
  577. 577
  578. 578
  579. 579
  580. 580
  581. 581
  582. 582
  583. 583
  584. 584
  585. 585
  586. 586
  587. 587
  588. 588
  589. 589
  590. 590
  591. 591
  592. 592
  593. 593
  594. 594
  595. 595
  596. 596
  597. 597
  598. 598
  599. 599
  600. 600
  601. 601
  602. 602
  603. 603
  604. 604
  605. 605
  606. 606
  607. 607
  608. 608
  609. 609
  610. 610
  611. 611
  612. 612
  613. 613
  614. 614
  615. 615
  616. 616
  617. 617
  618. 618
  619. 619
  620. 620
  621. 621
  622. 622
  623. 623
  624. 624
  625. 625
  626. 626
  627. 627
  628. 628
  629. 629
  630. 630
  631. 631
  632. 632
  633. 633
  634. 634
  635. 635
  636. 636
  637. 637
  638. 638
  639. 639
  640. 640
  641. 641
  642. 642
  643. 643
  644. 644
  645. 645
  646. 646
  647. 647
  648. 648
  649. 649
  650. 650
  651. 651
  652. 652
  653. 653
  654. 654
  655. 655
  656. 656
  657. 657
  658. 658
  659. 659
  660. 660
  661. 661
  662. 662
  663. 663
  664. 664
  665. 665
  666. 666
  667. 667
  668. 668
  669. 669
  670. 670
  671. 671
  672. 672
  673. 673
  674. 674
  675. 675