hitmix 79 Report post Posted April 17, 2016 (edited) Hello, Here are the questions: 1. An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost? 2. If y(x-1)=z then x=...... 3. Two angles of a triangle measure 15° and 85 °. What is the measure for the third angle? 4. Sarah is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother? 5. The number of milliliters in 1 liter is..... 6. The cost to ride on a ferry is $5.00 per vehicle and driver with an additional cost of 50 cents per passenger. If the charge to get on the ferry is $6.50, how many people were in the vehicle? 7. If 3x + 5x = -8, then x + 1 =...... 8. What are the solutions of this ecuation: x^2 + 2x = 24 ? (x^2 = x power 2 = x * x) 9. A die is rolled once. What is the probability of getting number 5? (in percent) 10. 210 is divisible by..... The rules and rewards are the same as last time. Deadline is Tuesday at 23:59 (UTC/GMT+3). Good luck Edited April 17, 2016 by hitmix 24 Bacelar1, TheLanza, MATADORDMORTO and 21 others reacted to this Share this post Link to post Share on other sites

GaneshAdhitya 15 Report post Posted April 17, 2016 (edited) IGN : Belacan game : RR2 1. $400 2. x=[(z/y)+1] 3. 80° 4. 15 years old 5. 1000mL 6. 3 passenger + 1 driver = 4 people 7. 0 8. 4 and -6 9. 16.67% (50/3%) 10.1,2,3,5,6,7,10,14,15,21,30,35,42,70,105,210 Edited April 17, 2016 by GaneshAdhitya Typo XD Share this post Link to post Share on other sites

theslimshady313 0 Report post Posted April 17, 2016 Ingame Name: Ciorba Game: Royal Revolt 2 1. $400 2. x= z/y +1 3. 80° 4. 15 5. 1000 milliliters 6. 3 people 7. 0 8. x = {-6, 4} 9. 16.666…% 10. 2, 3, 5, 7, 30, 42, 70, 105 Share this post Link to post Share on other sites

Bananenbier 4 Report post Posted April 17, 2016 Name: Bananenbier Game: Royal Revolt II 1. $ 382,5 (Don't know if my answer is correct, but it's waaaaay too much for just a flute!) 2. z/y +1 3. 80 degrees 4. 15 5. 1000 ml 6. 4 7. 0 8. x = 4 9. 16,67% 10. 2 Share this post Link to post Share on other sites

oPelle 2,931 Report post Posted April 17, 2016 408€ original price. to do it is: 306*100 / (100°-25°) x = z/y + 1 80° because sum of internal angles of a triangle is 180° she is 30 years old and her brother is 15 years old. 1000 milliliters 3 passenger + the 1 driver of the 5.00$ = 4 people 0 because 8x = 8; x = -1 so -1 +1 = 0 result: 2.8 because (x^2 +2x) / x = 24/x ; x^2 +2 = 24x ; x^3 + 2 = 24 ; x^3 = 22; 3^√ 22 = 2.8 result is: 16,6% because 1/6 where 6 are the faces. 210 is divisible by 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105 e 210 ign: oPelle game: rr2 1 sourav reacted to this Share this post Link to post Share on other sites

Mag 1,787 Report post Posted April 17, 2016 (edited) Game: Royal Revolt II IGN: emgiee1 1. An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost? $400 2. If y(x-1)=z then x=...... x = z/y + 1 3. Two angles of a triangle measure 15° and 85 °. What is the measure for the third angle? 80 4. Sarah is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother? 15 5. The number of milliliters in 1 liter is..... 1000 6. The cost to ride on a ferry is $5.00 per vehicle and driver with an additional cost of 50 cents per passenger. If the charge to get on the ferry is $6.50, how many people were in the vehicle? 4 (3 passengers + 1 driver) 7. If 3x + 5x = -8, then x + 1 =...... 0 8. What are the solutions of this ecuation: x^2 + 2x = 24 ? (x^2 = x power 2 = x * x) x={-6,4} 9. A die is rolled once. What is the probability of getting number 5? (in percent) ≈16.67% 10. 210 is divisible by..... 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 Edited April 18, 2016 by Mag Share this post Link to post Share on other sites

SorinM 113 Report post Posted April 17, 2016 (edited) Game: RR2 IGN: SorinM 1. An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost? $400 2. If y(x-1)=z then x=...... x = z/y + 1 3. Two angles of a triangle measure 15° and 85 °. What is the measure for the third angle? 80 4. Sarah is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother? 15 5. The number of milliliters in 1 liter is..... 1000 6. The cost to ride on a ferry is $5.00 per vehicle and driver with an additional cost of 50 cents per passenger. If the charge to get on the ferry is $6.50, how many people were in the vehicle? 4 (3 passengers + 1 driver) 7. If 3x + 5x = -8, then x + 1 =...... 0 8. What are the solutions of this ecuation: x^2 + 2x = 24 ? (x^2 = x power 2 = x * x) x={-6,4} 9. A die is rolled once. What is the probability of getting number 5? (in percent) ≈16.67% 10. 210 is divisible by..... 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 Edited April 18, 2016 by SorinM Share this post Link to post Share on other sites

5trip 9 Report post Posted April 17, 2016 (edited) Game: RR2 IGN: 5trip 1. An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost? $400 2. If y(x-1)=z then x=...... x = z/y + 1 3. Two angles of a triangle measure 15° and 85 °. What is the measure for the third angle? 80 4. Sarah is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother? 15 5. The number of milliliters in 1 liter is..... 1000 6. The cost to ride on a ferry is $5.00 per vehicle and driver with an additional cost of 50 cents per passenger. If the charge to get on the ferry is $6.50, how many people were in the vehicle? 4 (3 passengers + 1 driver) 7. If 3x + 5x = -8, then x + 1 =...... 0 8. What are the solutions of this ecuation: x^2 + 2x = 24 ? (x^2 = x power 2 = x * x) x={-6,4} 9. A die is rolled once. What is the probability of getting number 5? (in percent) ≈16.67% 10. 210 is divisible by..... 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 Edited April 18, 2016 by 5trip Share this post Link to post Share on other sites

GabiGabi 2 Report post Posted April 17, 2016 Ign: Gabi Gabi RR2 1. 400 $ 2. X=Z/Y+1 3. 80° 4. 15 years old 5. 1l has 1000ml 6. 4 persons 7. X=-1 8. X=6 and x=-4 9. 16.66666% 10. 2,3,5,7,30,42,70,105 Share this post Link to post Share on other sites

CafeLatte 1 Report post Posted April 17, 2016 Hello Hitmix, this are my answers: 1. $400 2. (y+z) / y 3. 80° 4. Sarah = 30 Brother: 15 5. 1000 6. 4 (3passengers and the driver) 7. 0, because x= -1 8. x= 4 9. 16,6 % 10. 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 Game: Royal Revolt 2 IGN: CaféLatte Share this post Link to post Share on other sites

Sweetsun1910 0 Report post Posted April 17, 2016 1. $400 2. (y+z) / y 3. 80° 4. Sarah = 30 Brother: 15 5. 1000 6. 4 (3passengers and the driver) 7. 0, because x= -1 8. x= 4 9. 16,6 % 10. 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 (16 times) Ingame: Sweetsungirl Game: Royal Revolt 2 Share this post Link to post Share on other sites

Dragonsoul 17 Report post Posted April 17, 2016 1- Julie got a 25% discount in total. Which means she only paid 3/4 of the original price, so we have the equation: 3x/4 = 306, where x is the original cost. We need to leave the x alone, so we do: x = 306 * 4 / 3. And by solving that we get 408. That's what the flute originally costed. 2- Here we only have to leave the x alone just like the last time: y(x-1) = z x-1 = z/y x = (z/y) + 1 3- The three angles in the inside of a triangle add up 180, so we form an equation, clear the x and solve: 15 + 85 + x = 180 x = 180 - 15 - 85 x = 80 4- Let x and y be as follows: x: Sarah's age. y: Her brother's age The info we have lets us form two equations: x = 2y (Because she's twice as old) x = y+15 (Because the difference between them is 15) Now we only need to form and equation with both x formulas and solve it: 2y = y + 15 2y - y = 15 y = 15. So her brother is 15 years old. 5- 1 liter = 1000 milliliters 6- The cost of $5 is for vehicle and driver. So an extra of $1.50 was charged. Taking in count that 50 cents are charged per person: 150 / 50 = 3. So three extra people were there. We don't have to forget the driver, so 4 people were in the vehicle. 7- The first equation lets us know the value of x: 3x + 5x = -8 8x = -8 x = -8 / 8 x = -1 So x + 1 is equal to 0. 8- We only have to clear it a bit and leave a zero alone: x^2 + 2x = 24 x^2 + 2x - 24 = 0 Now we use factorization and get: (x+6)(x-4) = 0 We form two equations (one for each factor) where we clear the x and get two solutions: x+6 = 0. So x = -6 is a solution. x-4 = 0. So x = 4 is another solution. As the second equation we formed is equal to the first one, Both -6 and 4 are solutions of x^2 + 2x = 24. 9- There's a 1 out of 6 probability of getting a 5, that's aproximately 16.7% 10- By 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105 and 210 itself. Share this post Link to post Share on other sites

ladymandy 0 Report post Posted April 17, 2016 Ingame name: lady.mandy Name of game: royal revolt 2 1. Originally cost $400 2. X= (z/y)+1 3. 80° 4. His age is 15 years old 5. 1000 6. There are 4 people 7. X+1= 0 8. X'= 4 ; x"= (-6) 9. 16,6667% 10. Divisible by 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210. Share this post Link to post Share on other sites

buuks 69 Report post Posted April 17, 2016 ign: buuks RR2 1. 400 $ 2. x=z/y+1 3. 80 degree 4. 15 years old 5. 1000 6. 4 people 7. 0 (zero) 8. X=6, X=-4 9. 16.66666% 10. 1,2,3,5,6,7,10,14,15,21,30,35,42,70,105,210 Share this post Link to post Share on other sites

Mac0104 0 Report post Posted April 17, 2016 Name: Mac0104 Game: Royal Revolt 2 1. 400$ 2. x=z/y+1 3. 80• 4. 15 years old 5. 1000 6. 4 people(3+driver) 7. x+1=0 8. x= (-6, 4) 9. 16,6666666% 10. 1,2,3,5,6,7,10,14,15,21,30,35,42,70,105,210 Share this post Link to post Share on other sites

Karman 1,081 Report post Posted April 17, 2016 (edited) 1- The problem states that the store already had a 10% off when they applied the 15% discount, that means that they took off 15% of 90%, and that's 13.5%. So we add up the discounts: 10 + 13.5 = 23.5% out in total. Julie paid 76.5% of the original prize so we solve: x = 306 * 100 / 76.5, and by solving that we get 400. That's what the flute originally costed. 2- Here we only have to leave the x alone just like the last time: y(x-1) = z x-1 = z/y x = (z/y) + 1 3- The three angles in the inside of a triangle add up 180, so we form an equation, clear the x and solve: 15 + 85 + x = 180 x = 180 - 15 - 85 x = 80 4- Let x and y be as follows: x: Sarah's age. y: Her brother's age The info we have lets us form two equations: x = 2y (Because she's twice as old) x = y+15 (Because the difference between them is 15) Now we only need to form and equation with both x formulas and solve it: 2y = y + 15 2y - y = 15 y = 15. So her brother is 15 years old. 5- 1 liter = 1000 milliliters 6- The cost of $5 is for vehicle and driver. So an extra of $1.50 was charged. Taking in count that 50 cents are charged per person: 150 / 50 = 3. So three extra people were there. We don't have to forget the driver, so 4 people were in the vehicle. 7- The first equation lets us know the value of x: 3x + 5x = -8 8x = -8 x = -8 / 8 x = -1 So x + 1 is equal to 0. 8- We only have to clear it a bit and leave a zero alone: x^2 + 2x = 24 x^2 + 2x - 24 = 0 Now we use factorization and get: (x+6)(x-4) = 0 We form two equations (one for each factor) where we clear the x and get two solutions: x+6 = 0. So x = -6 is a solution. x-4 = 0. So x = 4 is another solution. As the second equation we formed is equal to the first one, Both -6 and 4 are solutions of x^2 + 2x = 24. 9- There's a 1 out of 6 probability of getting a 5, that's aproximately 16.7% 10- By 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105 and 210 itself. IGN: Krman Game: RR2 Edited April 18, 2016 by Karman Share this post Link to post Share on other sites

Hercules1301 0 Report post Posted April 17, 2016 (edited) 11 hours ago, hitmix said: Hello, Here are the questions: 1. An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost? 2. If y(x-1)=z then x=...... 3. Two angles of a triangle measure 15° and 85 °. What is the measure for the third angle? 4. Sarah is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother? 5. The number of milliliters in 1 liter is..... 6. The cost to ride on a ferry is $5.00 per vehicle and driver with an additional cost of 50 cents per passenger. If the charge to get on the ferry is $6.50, how many people were in the vehicle? 7. If 3x + 5x = -8, then x + 1 =...... 8. What are the solutions of this ecuation: x^2 + 2x = 24 ? (x^2 = x power 2 = x * x) 9. A die is rolled once. What is the probability of getting number 5? (in percent) 10. 210 is divisible by..... The rules and rewards are the same as last time. Deadline is Tuesday at 23:59 (UTC/GMT+3). Good luck 1. 400 2. x = z/y + 1 3. 80° 4. 15 5. 1000 6. 4 7. 0 8. 4 (and - or) -6 9. 16,666666% 10. 1, 2, 3, 5, 6, 7, 10, 14,, 15, 21, 30, 35, 42, 70, 105, 210 Ingame name: Hercules1301 Royal Revolt 2 Edited April 17, 2016 by Hercules1301 I forgot to write the ingame name and game name. Share this post Link to post Share on other sites

Boccoldoro 0 Report post Posted April 17, 2016 1. 400 2. x = z/y + 1 3. 80 4. 15 5. 1000 6. 4 7. 0 8. 4, -6 9. 16,666666% 10. 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 nome: Boccol d oro (Boccoldoro) Royal Revolt 2 Share this post Link to post Share on other sites

shrawan 4 Report post Posted April 17, 2016 (edited) 1. 400 dollar 2. (z/y)-1 3. 80 degree 4. 30 5. 1000 6. 3 7. 0 8. 24,22 9. 16.67 10.1,2,3,5,7,10,21,30,42,70,105,210. IGN: Shrawan1 game: Royal revolt 2. Edited April 17, 2016 by shrawan left the game name.. Share this post Link to post Share on other sites

Marquez 0 Report post Posted April 17, 2016 1. 400 2. x = (z/y)+1 3. 80 4. 15 5. 1000 ml 6. 4 7. 0 8. x = 4, -6 9. 16.67% 10. 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 ign David marquez Share this post Link to post Share on other sites

21969014171 0 Report post Posted April 17, 2016 1. $400 2. x = 1 + z/y 3. 80° 4. 15 years 5. 1 thousand 6. 4 people 7. Zero 8. x=-6 or x=4 9. 16,67% 10. 210, 105, 70, 42, 35, 30, 21, 15, 14, 10, 7, 6, 5, 3, 2, 1 nick: Lord keven1 Share this post Link to post Share on other sites

willian 0 Report post Posted April 17, 2016 1) 400 2) x=z/y-1 3) 80° 4) 15 5) 1000 6) 4 7) 0 8) x= -6, 4 9) 16,666% 10) 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42 70, 105, 210 game: Royal Revolt 2 IGN: davi araujo Share this post Link to post Share on other sites

msirrom9 1 Report post Posted April 17, 2016 1. 400 2. x = (z/y)+1 3. 80 4. 15 5. 1000 ml 6. 4 7. x+1 = 0 8. x = 4, x = -6 9. 16.67% 10. 1,2,3,5,6,7,10,14,15,21,30,35,42,70,105,210 Ign: msirrom9 Share this post Link to post Share on other sites

kekka1 0 Report post Posted April 18, 2016 1) 400 2) x=z/y-1 3) 80° 4) 15 5) 1000 6) 4 7) 0 8) x= -6, 4 9) 16,666% 10) 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42 70, 105, 210 Share this post Link to post Share on other sites

kekka1 0 Report post Posted April 18, 2016 1) 400 2) x=z/y-1 3) 80° 4) 15 5) 1000 6) 4 7) 0 8) x= -6, 4 9) 16,666% 10) 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42 70, 105, 210. IGN. kekka1 RR2 Share this post Link to post Share on other sites