All Answers 358090 Answers

Well if it has 3 significant figures it should be written as 0.500

On the web2 calc  press [2nd] [atan]  value

atan stands for arc tan which is the same as inverse tan :)

Hi Meelelion,

Welcome to the forum :)

What  #1 said is true, they can be used for a whole range of problems but when you learn that 

\(tan\theta=\frac{opp}{hyp}\)

etc,

That ONLY applies to right angled triangles :)

Great answers, but are they correct?

That is for you to decide ???    

863/17=50.7 check in calculator and if u want in fractional form then there is no fractional form of this 863/17 is the simplest form

we have two milk pots 1st is 3kg and 2nd is 5kg so how can we measure exact 4kg without using any 3rd pot?

1. fill up the 3kg milk pot.

2. put it in the 5kg milk pot. The 5 kg pot now contains 3 kg

3. fill up the 3kg milk pot again.

4. put it in the 5kg milk pot. The 5 kg pot now contains 5 kg. The 3kg milk pot now contains 1kg.

5. void the 5kg milk pot.

6. put the 1kg (of the 3kg milk pot) in the 5kg milk pot. The 5 kg pot now contains 1 kg.

7. fill up the 3kg milk pot.

8 put it in the 5 kg mild pot. The 5 kg pot now contains 4 kg.

Hi Solveit,

I think it is reasonable to assume that this is a direct variation question.

a. Use the fact that x=39 when y=-117 to find the constant of variation and write the equation of variation.

b. Find the value of x when y= -132.

\(y=kx\\ -117=k*39\\ k=\frac{-117}{39}\\~\\ y=\frac{-117}{39}*x\\ When y = -132\\ -132=\frac{-117}{39}*x\\ -132*\frac{-39}{117}=x\\ x=\frac{132*39}{117}\)

132*39/117 = 44

When      y=-132      x=44

8,574 KM

Using US coins of 1¢, 5¢, 10¢, 25¢, 50¢, and $1, how many ways are there to make change for $1.00.  List all the ways.

\(\small{ \begin{array}{|r|r|r|r|r|r|r|r|} \hline Number & & 1~ \text{Cent} & 5~ \text{Cent} & 10~ \text{Cent} & 25~ \text{Cent} & 50~ \text{Cent} & $1\\ \hline 1. & 100 = &&&&&& 1\\ 2. & 100 = &&&&& 2\\ 3. & 100 = &&&& 2& 1\\ 4. & 100 = &&&& 4&\\ 5. & 100 = &&& 5&& 1\\ 6. & 100 = &&& 5& 2&\\ 7. & 100 = &&& 10&&\\ 8. & 100 = && 1& 2& 1& 1\\ 9. & 100 = && 1& 2& 3&\\ 10. & 100 = && 1& 7& 1&\\ 11. & 100 = && 2& 4&& 1\\ 12. & 100 = && 2& 4& 2&\\ 13. & 100 = && 2& 9&&\\ 14. & 100 = && 3& 1& 1& 1\\ 15. & 100 = && 3& 1& 3&\\ 16. & 100 = && 3& 6& 1&\\ 17. & 100 = && 4& 3&& 1\\ 18. & 100 = && 4& 3& 2&\\ 19. & 100 = && 4& 8&&\\ 20. & 100 = && 5&& 1& 1\\ 21. & 100 = && 5&& 3&\\ 22. & 100 = && 5& 5& 1&\\ 23. & 100 = && 6& 2&& 1\\ 24. & 100 = && 6& 2& 2&\\ 25. & 100 = && 6& 7&&\\ 26. & 100 = && 7& 4& 1&\\ 27. & 100 = && 8& 1&& 1\\ 28. & 100 = && 8& 1& 2&\\ 29. & 100 = && 8& 6&&\\ 30. & 100 = && 9& 3& 1&\\ 31. & 100 = && 10&&& 1\\ 32. & 100 = && 10&& 2&\\ 33. & 100 = && 10& 5&&\\ 34. & 100 = && 11& 2& 1&\\ 35. & 100 = && 12& 4&&\\ 36. & 100 = && 13& 1& 1&\\ 37. & 100 = && 14& 3&&\\ 38. & 100 = && 15&& 1&\\ 39. & 100 = && 16& 2&&\\ 40. & 100 = && 18& 1&&\\ 41. & 100 = && 20&&&\\ 42. & 100 = & 5&& 2& 1& 1\\ 43. & 100 = & 5&& 2& 3&\\ 44. & 100 = & 5&& 7& 1&\\ 45. & 100 = & 5& 1& 4&& 1\\ 46. & 100 = & 5& 1& 4& 2&\\ 47. & 100 = & 5& 1& 9&&\\ 48. & 100 = & 5& 2& 1& 1& 1\\ 49. & 100 = & 5& 2& 1& 3&\\ 50. & 100 = & 5& 2& 6& 1&\\ 51. & 100 = & 5& 3& 3&& 1\\ 52. & 100 = & 5& 3& 3& 2&\\ 53. & 100 = & 5& 3& 8&&\\ 54. & 100 = & 5& 4&& 1& 1\\ 55. & 100 = & 5& 4&& 3&\\ 56. & 100 = & 5& 4& 5& 1&\\ 57. & 100 = & 5& 5& 2&& 1\\ 58. & 100 = & 5& 5& 2& 2&\\ 59. & 100 = & 5& 5& 7&&\\ 60. & 100 = & 5& 6& 4& 1&\\ 61. & 100 = & 5& 7& 1&& 1\\ 62. & 100 = & 5& 7& 1& 2&\\ 63. & 100 = & 5& 7& 6&&\\ 64. & 100 = & 5& 8& 3& 1&\\ 65. & 100 = & 5& 9&&& 1\\ 66. & 100 = & 5& 9&& 2&\\ 67. & 100 = & 5& 9& 5&&\\ 68. & 100 = & 5& 10& 2& 1&\\ 69. & 100 = & 5& 11& 4&&\\ 70. & 100 = & 5& 12& 1& 1&\\ 71. & 100 = & 5& 13& 3&&\\ 72. & 100 = & 5& 14&& 1&\\ 73. & 100 = & 5& 15& 2&&\\ 74. & 100 = & 5& 17& 1&&\\ 75. & 100 = & 5& 19&&&\\ 76. & 100 = & 10&& 4&& 1\\ 77. & 100 = & 10&& 4& 2&\\ 78. & 100 = & 10&& 9&&\\ 79. & 100 = & 10& 1& 1& 1& 1\\ 80. & 100 = & 10& 1& 1& 3&\\ 81. & 100 = & 10& 1& 6& 1&\\ 82. & 100 = & 10& 2& 3&& 1\\ 83. & 100 = & 10& 2& 3& 2&\\ 84. & 100 = & 10& 2& 8&&\\ 85. & 100 = & 10& 3&& 1& 1\\ 86. & 100 = & 10& 3&& 3&\\ 87. & 100 = & 10& 3& 5& 1&\\ 88. & 100 = & 10& 4& 2&& 1\\ 89. & 100 = & 10& 4& 2& 2&\\ 90. & 100 = & 10& 4& 7&&\\ 91. & 100 = & 10& 5& 4& 1&\\ 92. & 100 = & 10& 6& 1&& 1\\ 93. & 100 = & 10& 6& 1& 2&\\ 94. & 100 = & 10& 6& 6&&\\ 95. & 100 = & 10& 7& 3& 1&\\ 96. & 100 = & 10& 8&&& 1\\ 97. & 100 = & 10& 8&& 2&\\ 98. & 100 = & 10& 8& 5&&\\ 99. & 100 = & 10& 9& 2& 1&\\ 100. & 100 = & 10& 10& 4&&\\ 101. & 100 = & 10& 11& 1& 1&\\ 102. & 100 = & 10& 12& 3&&\\ 103. & 100 = & 10& 13&& 1&\\ 104. & 100 = & 10& 14& 2&&\\ 105. & 100 = & 10& 16& 1&&\\ 106. & 100 = & 10& 18&&&\\ 107. & 100 = & 15&& 1& 1& 1\\ 108. & 100 = & 15&& 1& 3&\\ 109. & 100 = & 15&& 6& 1&\\ 110. & 100 = & 15& 1& 3&& 1\\ 111. & 100 = & 15& 1& 3& 2&\\ 112. & 100 = & 15& 1& 8&&\\ 113. & 100 = & 15& 2&& 1& 1\\ 114. & 100 = & 15& 2&& 3&\\ 115. & 100 = & 15& 2& 5& 1&\\ 116. & 100 = & 15& 3& 2&& 1\\ 117. & 100 = & 15& 3& 2& 2&\\ 118. & 100 = & 15& 3& 7&&\\ 119. & 100 = & 15& 4& 4& 1&\\ 120. & 100 = & 15& 5& 1&& 1\\ 121. & 100 = & 15& 5& 1& 2&\\ 122. & 100 = & 15& 5& 6&&\\ 123. & 100 = & 15& 6& 3& 1&\\ 124. & 100 = & 15& 7&&& 1\\ 125. & 100 = & 15& 7&& 2&\\ 126. & 100 = & 15& 7& 5&&\\ 127. & 100 = & 15& 8& 2& 1&\\ 128. & 100 = & 15& 9& 4&&\\ 129. & 100 = & 15& 10& 1& 1&\\ 130. & 100 = & 15& 11& 3&&\\ 131. & 100 = & 15& 12&& 1&\\ 132. & 100 = & 15& 13& 2&&\\ 133. & 100 = & 15& 15& 1&&\\ 134. & 100 = & 15& 17&&&\\ 135. & 100 = & 20&& 3&& 1\\ 136. & 100 = & 20&& 3& 2&\\ 137. & 100 = & 20&& 8&&\\ 138. & 100 = & 20& 1&& 1& 1\\ 139. & 100 = & 20& 1&& 3&\\ 140. & 100 = & 20& 1& 5& 1&\\ 141. & 100 = & 20& 2& 2&& 1\\ 142. & 100 = & 20& 2& 2& 2&\\ 143. & 100 = & 20& 2& 7&&\\ 144. & 100 = & 20& 3& 4& 1&\\ 145. & 100 = & 20& 4& 1&& 1\\ 146. & 100 = & 20& 4& 1& 2&\\ 147. & 100 = & 20& 4& 6&&\\ 148. & 100 = & 20& 5& 3& 1&\\ 149. & 100 = & 20& 6&&& 1\\ 150. & 100 = & 20& 6&& 2&\\ 151. & 100 = & 20& 6& 5&&\\ 152. & 100 = & 20& 7& 2& 1&\\ 153. & 100 = & 20& 8& 4&&\\ 154. & 100 = & 20& 9& 1& 1&\\ 155. & 100 = & 20& 10& 3&&\\ 156. & 100 = & 20& 11&& 1&\\ 157. & 100 = & 20& 12& 2&&\\ 158. & 100 = & 20& 14& 1&&\\ 159. & 100 = & 20& 16&&&\\ 160. & 100 = & 25&&& 1& 1\\ 161. & 100 = & 25&&& 3&\\ 162. & 100 = & 25&& 5& 1&\\ 163. & 100 = & 25& 1& 2&& 1\\ 164. & 100 = & 25& 1& 2& 2&\\ 165. & 100 = & 25& 1& 7&&\\ 166. & 100 = & 25& 2& 4& 1&\\ 167. & 100 = & 25& 3& 1&& 1\\ 168. & 100 = & 25& 3& 1& 2&\\ 169. & 100 = & 25& 3& 6&&\\ 170. & 100 = & 25& 4& 3& 1&\\ 171. & 100 = & 25& 5&&& 1\\ 172. & 100 = & 25& 5&& 2&\\ 173. & 100 = & 25& 5& 5&&\\ 174. & 100 = & 25& 6& 2& 1&\\ 175. & 100 = & 25& 7& 4&&\\ 176. & 100 = & 25& 8& 1& 1&\\ 177. & 100 = & 25& 9& 3&&\\ 178. & 100 = & 25& 10&& 1&\\ 179. & 100 = & 25& 11& 2&&\\ 180. & 100 = & 25& 13& 1&&\\ 181. & 100 = & 25& 15&&&\\ 182. & 100 = & 30&& 2&& 1\\ 183. & 100 = & 30&& 2& 2&\\ 184. & 100 = & 30&& 7&&\\ 185. & 100 = & 30& 1& 4& 1&\\ 186. & 100 = & 30& 2& 1&& 1\\ 187. & 100 = & 30& 2& 1& 2&\\ 188. & 100 = & 30& 2& 6&&\\ 189. & 100 = & 30& 3& 3& 1&\\ 190. & 100 = & 30& 4&&& 1\\ 191. & 100 = & 30& 4&& 2&\\ 192. & 100 = & 30& 4& 5&&\\ 193. & 100 = & 30& 5& 2& 1&\\ 194. & 100 = & 30& 6& 4&&\\ 195. & 100 = & 30& 7& 1& 1&\\ 196. & 100 = & 30& 8& 3&&\\ 197. & 100 = & 30& 9&& 1&\\ 198. & 100 = & 30& 10& 2&&\\ 199. & 100 = & 30& 12& 1&&\\ 200. & 100 = & 30& 14&&&\\ 201. & 100 = & 35&& 4& 1&\\ 202. & 100 = & 35& 1& 1&& 1\\ 203. & 100 = & 35& 1& 1& 2&\\ 204. & 100 = & 35& 1& 6&&\\ 205. & 100 = & 35& 2& 3& 1&\\ 206. & 100 = & 35& 3&&& 1\\ 207. & 100 = & 35& 3&& 2&\\ 208. & 100 = & 35& 3& 5&&\\ 209. & 100 = & 35& 4& 2& 1&\\ 210. & 100 = & 35& 5& 4&&\\ 211. & 100 = & 35& 6& 1& 1&\\ 212. & 100 = & 35& 7& 3&&\\ 213. & 100 = & 35& 8&& 1&\\ 214. & 100 = & 35& 9& 2&&\\ 215. & 100 = & 35& 11& 1&&\\ 216. & 100 = & 35& 13&&&\\ 217. & 100 = & 40&& 1&& 1\\ 218. & 100 = & 40&& 1& 2&\\ 219. & 100 = & 40&& 6&&\\ 220. & 100 = & 40& 1& 3& 1&\\ 221. & 100 = & 40& 2&&& 1\\ 222. & 100 = & 40& 2&& 2&\\ 223. & 100 = & 40& 2& 5&&\\ 224. & 100 = & 40& 3& 2& 1&\\ 225. & 100 = & 40& 4& 4&&\\ 226. & 100 = & 40& 5& 1& 1&\\ 227. & 100 = & 40& 6& 3&&\\ 228. & 100 = & 40& 7&& 1&\\ 229. & 100 = & 40& 8& 2&&\\ 230. & 100 = & 40& 10& 1&&\\ 231. & 100 = & 40& 12&&&\\ 232. & 100 = & 45&& 3& 1&\\ 233. & 100 = & 45& 1&&& 1\\ 234. & 100 = & 45& 1&& 2&\\ 235. & 100 = & 45& 1& 5&&\\ 236. & 100 = & 45& 2& 2& 1&\\ 237. & 100 = & 45& 3& 4&&\\ 238. & 100 = & 45& 4& 1& 1&\\ 239. & 100 = & 45& 5& 3&&\\ 240. & 100 = & 45& 6&& 1&\\ 241. & 100 = & 45& 7& 2&&\\ 242. & 100 = & 45& 9& 1&&\\ 243. & 100 = & 45& 11&&&\\ 244. & 100 = & 50&&&& 1\\ 245. & 100 = & 50&&& 2&\\ 246. & 100 = & 50&& 5&&\\ 247. & 100 = & 50& 1& 2& 1&\\ 248. & 100 = & 50& 2& 4&&\\ 249. & 100 = & 50& 3& 1& 1&\\ 250. & 100 = & 50& 4& 3&&\\ 251. & 100 = & 50& 5&& 1&\\ 252. & 100 = & 50& 6& 2&&\\ 253. & 100 = & 50& 8& 1&&\\ 254. & 100 = & 50& 10&&&\\ 255. & 100 = & 55&& 2& 1&\\ 256. & 100 = & 55& 1& 4&&\\ 257. & 100 = & 55& 2& 1& 1&\\ 258. & 100 = & 55& 3& 3&&\\ 259. & 100 = & 55& 4&& 1&\\ 260. & 100 = & 55& 5& 2&&\\ 261. & 100 = & 55& 7& 1&&\\ 262. & 100 = & 55& 9&&&\\ 263. & 100 = & 60&& 4&&\\ 264. & 100 = & 60& 1& 1& 1&\\ 265. & 100 = & 60& 2& 3&&\\ 266. & 100 = & 60& 3&& 1&\\ 267. & 100 = & 60& 4& 2&&\\ 268. & 100 = & 60& 6& 1&&\\ 269. & 100 = & 60& 8&&&\\ 270. & 100 = & 65&& 1& 1&\\ 271. & 100 = & 65& 1& 3&&\\ 272. & 100 = & 65& 2&& 1&\\ 273. & 100 = & 65& 3& 2&&\\ 274. & 100 = & 65& 5& 1&&\\ 275. & 100 = & 65& 7&&&\\ 276. & 100 = & 70&& 3&&\\ 277. & 100 = & 70& 1&& 1&\\ 278. & 100 = & 70& 2& 2&&\\ 279. & 100 = & 70& 4& 1&&\\ 280. & 100 = & 70& 6&&&\\ 281. & 100 = & 75&&& 1&\\ 282. & 100 = & 75& 1& 2&&\\ 283. & 100 = & 75& 3& 1&&\\ 284. & 100 = & 75& 5&&&\\ 285. & 100 = & 80&& 2&&\\ 286. & 100 = & 80& 2& 1&&\\ 287. & 100 = & 80& 4&&&\\ 288. & 100 = & 85& 1& 1&&\\ 289. & 100 = & 85& 3&&&\\ 290. & 100 = & 90&& 1&&\\ 291. & 100 = & 90& 2&&&\\ 292. & 100 = & 95& 1&&&\\ 293. & 100 = &100&&&&\\ \hline \end{array} } \)

Sorry Hayley, I did not need to post over you.  Your answer was very good :)

714285714285714.2857142857142857, how the h**l do I transfer that to standard form?

This is a big number so the index will be positive

7.1.4.2.8.5.7.1.4.2.8.5.7.1.4.2857142857142857

I just moved the point 14 places to get     7.142857142857142857142857142857

For standard form I have to have exaclt one non-zero digit infront of the point .

so the answer is 

\(7.142857142857142857142857142857 \times 10^{14}\)

Coldplay and Guest

A number is divisable by 4 if the last 2 digits are divisable by 4

for example

Is    30 346   divisable by 4?        46/4 is not a whole number      SO     30 346 is NOT divisable by 4

Is    7368    divisable by 4?         68/4 = 17 and that is a whole number     so     7368 IS divisable by 4!

1984 by George Orwell is a very famous book Hayley and Coldplay.  It is dated now as I think it was written in 1948.  (that might be wrong, I just have that in my head)

Anyway it is only a little book and very readable and older people refer to it ALL the time.  It is quite thought provoking. It is written about a possible future where the gov't know all and people are very controlled.  SOME of the things in the book have become reality.  Others, not so much.

If you read at all I think that you should put this one on your list :)

Hi Tyler,

Welcome to the forum :)

A certain stock measures 0.875 inch in diameter. What does this measure, to the nearest 1/16 inch, with an outside caliper and a scale?

I think I have interpreted your question properly but I am not certain.

0.875/2 = 0.4375

The real measurment would be    \(0.0875\pm0.4375\;inches \)

Nothing is wrong with leaving it in the numerator KatieLeigh,

BUT normally it would be rewritten as xvxvxv first presented it.  I would consider it more 'simple' if it is written as a fraction.

Guest was right though - the question specifically asked for it all to be left in the numerator :)

Hi Volleyball7, 

It is really nice to meet you :)

4. Which ordered pair is a solution of the inequality? Y>4x-5

Just test them one at a time and work out which is true

A- (3,4)

x=3   y=4

4x-5=4*3-5 = 12-5 = 7      Is 4 greater than 7 ?  NO so this point does NOT to make the startement true.

Now try B C and D one at a time and see which pair of numbers makes the inequality true :)

B- (2,1)

C- (3,0)

D- (1,1)

29832867780.352595529116035863597 (according to win7 calculator)

also, did you know the human body can only withstand about 25g worth of forces before death?

also also, if you wanted to get to tokyo from san francisco in 83 seconds, you would have to go at a speed of about 222766mi/second.

also also also, there are 21 denny locations in las vegas.

also also also also, james lives in Langley, Canada

Thank you !! And I know that I should  use casio or one of the other scientific calculators, but I didn't have time to buy one and none of online calculators has dms button. Why don't they make an online calculator with  that button ?

a=5.3

SDRTYUUIDFVHYYTegtjb

What is this equal to? 1+4+9+16+25...

Don't say that it is infinity.

\(\begin{array}{lrrrrrrrrrr} & {\color{red}d_0 = 1^2} && 2^2 && 3^2 && 4^2 && 5^2 && \cdots \\ \text{1. Difference } && {\color{red}d_1 = 3} && 5 && 7 && 9 && 11 && \cdots \\ \text{2. Difference } &&& {\color{red}d_2 = 2} && 2 && 2 && 2 && 2 && \cdots \\ \end{array}\)

\(\begin{array}{rcl} s_n &=& \binom{n}{1}\cdot {\color{red}d_0 } + \binom{n}{2}\cdot {\color{red}d_1 } + \binom{n}{3}\cdot {\color{red}d_2 }\\ s_n &=& \binom{n}{1}\cdot {\color{red}1 } + \binom{n}{2}\cdot {\color{red}3} + \binom{n}{3}\cdot {\color{red}2}\\ \\ \hline \binom{n}{1} &=& n \\ \binom{n}{2} &=& ( \frac{n}{2} ) \cdot ( \frac{n-1}{1} ) \\ \binom{n}{3} &=& ( \frac{n}{3} ) \cdot ( \frac{n-1}{2} )\cdot ( \frac{n-2}{1} ) \\ \hline \\ s_n &=& (n)\cdot {\color{red}1} + ( \frac{n}{2} ) \cdot ( \frac{n-1}{1} )\cdot {\color{red}3} + ( \frac{n}{3} ) \cdot ( \frac{n-1}{2} )\cdot ( \frac{n-2}{1} )\cdot {\color{red}2} \quad | \quad \cdot 6\\ 6\cdot s_n &=& n\cdot 6 + n \cdot ( n-1 )\cdot 9 + n \cdot ( n-1 )\cdot ( n-2 )\cdot 2 \\ 6\cdot s_n &=& n \left[~ 6 + ( n-1 )\cdot 9 + ( n-1 )\cdot ( n-2 )\cdot 2 ~\right] \\ 6\cdot s_n &=& (n) \left[~ 6 + 9n-9 + (n^2 - 3n + 2)\cdot 2 ~\right] \\ 6\cdot s_n &=& (n) \left[~ -3 + 9n + (n^2 - 3n + 2)\cdot 2 ~\right] \\ 6\cdot s_n &=& (n) \left(~ -3 + 9n + 2n^2 - 6n + 4 ~\right) \\ 6\cdot s_n &=& (n) \left(~ 1 + 3n + 2n^2 ~\right) \\ 6\cdot s_n &=& (n) \cdot (n+1) \cdot ( 2n + 1 ) \\\\ \mathbf{s_n} &=& \mathbf{ \frac{ (n) \cdot (n+1) \cdot ( 2n + 1 ) }{6} } \\\\ s_1 &=& 1 = \frac{ 1 \cdot ( 1+1) \cdot ( 2\cdot 1 + 1 ) }{6} = 1\\ s_2 &=& 1+4 = \frac{ 2 \cdot ( 2+1) \cdot ( 2\cdot 2 + 1 ) }{6} = 5\\ s_3 &=& 1+4+9 = \frac{ 3 \cdot ( 3+1) \cdot ( 2\cdot 3 + 1 ) }{6} = 14\\ s_4 &=& 1+4+9+16 = \frac{ 4 \cdot ( 4+1) \cdot ( 2\cdot 4 + 1 ) }{6} = 30\\ s_5 &=& 1+4+9+16+25 = \frac{ 5 \cdot ( 5+1) \cdot ( 2\cdot 5 + 1 ) }{6} = 55\\ \cdots \end{array}\)

Click on LaTeX, clear the textbok, then type tan.  Then type {}^{}.  Inside the second brackets type -1.  Then click on OK.

\(tan{}^{-1}\) 

triangle ABC is a right triangle and the the HL is angle A  to help explailn his question.

The answer is: one fifty cent piece, one nickel, and one penny.  One of the coins is not a fifty cent piece.  Is a nickel a fifty cent piece and is a penny a fifty cent piece?