• Class 11 Physics Demo

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Question:All thirty students in Marias class speak english. 6 speak chinese, 2 speak japanese and 4 speak russian. WHat is the probability that a student selected at randomn speaks two languages? Mia hs 3 number cards. 2,3 and 4. She use all three cards to make different 3 digit numbers. WHat is the mean of all the different numbers Mia can make in this way?

Answers:Hi, All thirty students in Maria's class speak English. 6 speak Chinese, 2 speak Japanese and 4 speak Russian. What is the probability that a student selected at random speaks two languages? 6 + 2 + 4 -------------- = 12/30 = .4 = 40% <==ANSWER . . 30 Mia has 3 number cards. 2,3 and 4. She use all three cards to make different 3 digit numbers. What is the mean of all the different numbers Mia can make in this way? 234 + 243 + 324 + 342 + 423 + 432 ---------------------------------------------------- = 1998/6 = 333 <==ANSWER . . . . . . . . . . . . 6 I hope that helps!! :-)

Question:1)The solution to 10 divided by the quantity x times the quantity x minus 2 plus 4 divided by x equals 5 divided by the quantity x minus 2 is x = 2. True False 2)There is no solution to 1 divided by the quantity x minus 8 minus 1 equals 7 divided by the quantity x minus 8. True False 3)Solve 3 divided by the quantity x plus 2 minus 1 divided by x equals 1 divided by 5 x. 4)Solve the quantity x plus 6 divided by 4 x squared plus 3 divided by 2 x squared equals the quantity x plus 4 divided by 2 x squared.

Answers:1. obviously true 2. obviously false SO SRRY DUN KNOW THE REST! btw missy i thin i have same qualities as u, im also a ballet. i wish i new u, a girl like u, i wud go out wit u, lol theres already 2 girls fightin for me.

Question:I have 4 questions i need help with.. i can't write them on here so i screen shot it... PLEASE HELP :) http://i185.photobucket.com/albums/x126/aliciafyre/Untitled-1.jpg

Answers:The solution is given at : http://i185.photobucket.com/albums/x126/aliciafyre/Untitled-1.jpg

Question:factorise and evaluate 99x10-99 x9 solve for x: 4(x+3)=12 Lisa has 60 lollies to share, she gave each of her friends the same number of lollies and had 5 left over for herself. If Lisa had fewer lollies than any of her friends, how many friends did lisa share her lollies with. The last digit of a 6 digit number is 2. If the two is moved to the start of the number, the new 6 digit number is only a third of the original number. Find the original number: 2abcde x 3 = abcde2 ( start of working out) Plz show workings out thank you so much in advance

Answers:99x^9 (x-1); pulled out 99x^9... x+3 = 3; divided each side by 3; next subtract 3 from each side and you get x=0 let x = # lollies per friend, let f = # friends; 60 -5 = 55; x*f = 55. so either 11 friends with 5 lollies each or 5 friends with 11 lollies each < which is the answer because Lisa had less lollies than her friends 6abcde=abcde2 wow, that was tricky, but fun when you set up the 2abcde x 3 = abcde2, you will see only certain numbers will end up with the correct second digit. Like only 4 x 3 ends in a 2 (12), so you know e=4. Continue the process, and you will get 285,714 x 3 = 857,142 = the original number.