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Quoting KLM672 (Thread starter): I have a math assestment coming up with a mixture of problems including percents, discounts, world problems, |
Quoting KLM672 (Reply 5): On a blueprint, 1/4 inch represents 16 feet. If a drive way is 40 feet long, what is its length, in inches, on the map? (5/8) |
Quoting KLM672 (Reply 5): A rabbit grows so that every 2 months it doubles in weight. However, the rabbit will never go over 75 lbs. If a bunny if born on July 15th weighing 2 lbs, in which month will it weight 46 lbs? (April) |
Quoting KLM672 (Reply 5): If a person puts 1 Cent in a piggy bank on the first day, 2 cents on the second, 3 cents on the third etc, how much money will be in the bank after 50 days? ($12.75) |
Quoting KLM672 (Reply 5): On a map, the length of a nature-center trail is 9.7 centimeters. If the scale is 3 centimeters to 25 kilometers, what is the actual length of the trail? (80.8 Kilometers) |
Quoting KLM672 (Reply 5): In a sale, the prices of a computer is reduced from $1280 to $1030. Find the discount and the rate of discount. Round the discount rate to the nearest tenth of a percent if necessary. I got the discount which is $250 = 1280-1030=250 but I am not sure how to do figure out the discount rate in percent. Its 19.5% |
Quoting KLM672 (Reply 5): John forgot to pay his $410.00 income tax on time. The IRS charged a penalty of 12% for the 61 days the money was late. Find the penalty that was paid. *Use a 365 day year. ($8.22) |
Quoting KLM672 (Reply 5): Mr. Grey's income rose from $20,000 one year to $23,000 the following year. What was the percent of increase? I (15%) |
Quoting KLM672 (Reply 5): Solve for x: ax+b=cx+d (d-b/a-c) |
Quoting KLM672 (Reply 5): How much money is saved by buying a shirt priced at $80 with a 40% discount, rather than buying a shirt marked at $90 with a discount of 35% then another 10%? ($4.65) |
Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) |
Quoting KLM672 (Reply 5): A bag contains only red marbles, blue marbles, and yellow marbles. The probability of randomly selecting a red marble from the bag is 1/4, and the probability of randomly selecting a blue marble is 1/6. Which could be the total number of marbles in the bag? (12,26) |
Quoting KLM672 (Reply 5): The Athletic Club is a new facility under development. The business expects total expenses of $142,000 in the first year. It will set the membership fee at $500 and expects to attract 300 members in the first year. It could rent additional space for an extra $12,000 per year. The extra space may attract more members because of the added space. Determine Vermont Athletic Club's earnings (the difference between expenses and revenues) if this extra space is rented and results in a total of 320 memberships in the first year. (6,000) |
Quoting KLM672 (Reply 5): On a blueprint, 1/4 inch represents 16 feet. If a drive way is 40 feet long, what is its length, in inches, on the map? (5/8) |
Quoting KLM672 (Reply 5): A rabbit grows so that every 2 months it doubles in weight. However, the rabbit will never go over 75 lbs. If a bunny if born on July 15th weighing 2 lbs, in which month will it weight 46 lbs? (April) |
Quoting KLM672 (Reply 5): On a map, the length of a nature-center trail is 9.7 centimeters. If the scale is 3 centimeters to 25 kilometers, what is the actual length of the trail? (80.8 Kilometers) |
Quoting KLM672 (Reply 5): I got the discount which is $250 = 1280-1030=250 but I am not sure how to do figure out the discount rate in percent. Its 19.5% |
Quoting KLM672 (Reply 5): John forgot to pay his $410.00 income tax on time. The IRS charged a penalty of 12% for the 61 days the money was late. Find the penalty that was paid. *Use a 365 day year. ($8.22) |
Quoting KLM672 (Reply 5): Mr. Grey's income rose from $20,000 one year to $23,000 the following year. What was the percent of increase? I (15%) |
Quoting KLM672 (Reply 5): Solve for x: ax+b=cx+d |
Quoting KLM672 (Reply 5): How much money is saved by buying a shirt priced at $80 with a 40% discount, rather than buying a shirt marked at $90 with a discount of 35% then another 10%? ($4.65) |
Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) |
Quoting KLM672 (Reply 5): The Athletic Club is a new facility under development. The business expects total expenses of $142,000 in the first year. It will set the membership fee at $500 and expects to attract 300 members in the first year. It could rent additional space for an extra $12,000 per year. The extra space may attract more members because of the added space. Determine Vermont Athletic Club's earnings (the difference between expenses and revenues) if this extra space is rented and results in a total of 320 memberships in the first year. |
Quoting ANITIX87 (Reply 6): Quoting KLM672 (Reply 5): If a person puts 1 Cent in a piggy bank on the first day, 2 cents on the second, 3 cents on the third etc, how much money will be in the bank after 50 days? ($12.75) Just keep adding 1+2+3+4+5+6+...+50. You get 1,275 cents, or $12.75. |
Quoting KLM672 (Reply 5): A bag contains only red marbles, blue marbles, and yellow marbles. The probability of randomly selecting a red marble from the bag is 1/4, and the probability of randomly selecting a blue marble is 1/6. Which could be the total number of marbles in the bag? (12,26) |
Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) |
Quoting KLM672 (Reply 5): On a blueprint, 1/4 inch represents 16 feet. If a drive way is 40 feet long, what is its length, in inches, on the map? |
Quoting KLM672 (Reply 5): A rabbit grows so that every 2 months it doubles in weight. However, the rabbit will never go over 75 lbs. If a bunny if born on July 15th weighing 2 lbs, in which month will it weight 46 lbs? (April) |
Quoting KLM672 (Reply 5): If a person puts 1 Cent in a piggy bank on the first day, 2 cents on the second, 3 cents on the third etc, how much money will be in the bank after 50 days? ($12.75) |
Quoting KLM672 (Reply 5): On a map, the length of a nature-center trail is 9.7 centimeters. If the scale is 3 centimeters to 25 kilometers, what is the actual length of the trail? (80.8 Kilometers) |
Quoting KLM672 (Reply 5): In a sale, the prices of a computer is reduced from $1280 to $1030. Find the discount and the rate of discount. Round the discount rate to the nearest tenth of a percent if necessary. I got the discount which is $250 = 1280-1030=250 but I am not sure how to do figure out the discount rate in percent. Its 19.5% |
Quoting KLM672 (Reply 5): John forgot to pay his $410.00 income tax on time. The IRS charged a penalty of 12% for the 61 days the money was late. Find the penalty that was paid. *Use a 365 day year. ($8.22) |
Quoting KLM672 (Reply 5): Mr. Grey's income rose from $20,000 one year to $23,000 the following year. What was the percent of increase? I (15%) |
Quoting KLM672 (Reply 5): Solve for x: ax+b=cx+d (d-b/a-c) |
Quoting KLM672 (Reply 5): How much money is saved by buying a shirt priced at $80 with a 40% discount, rather than buying a shirt marked at $90 with a discount of 35% then another 10%? ($4.65) |
Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) |
Quoting KLM672 (Reply 5): A bag contains only red marbles, blue marbles, and yellow marbles. The probability of randomly selecting a red marble from the bag is 1/4, and the probability of randomly selecting a blue marble is 1/6. Which could be the total number of marbles in the bag? (12,26) |
Quoting KLM672 (Reply 5): The Athletic Club is a new facility under development. The business expects total expenses of $142,000 in the first year. It will set the membership fee at $500 and expects to attract 300 members in the first year. It could rent additional space for an extra $12,000 per year. The extra space may attract more members because of the added space. Determine Vermont Athletic Club's earnings (the difference between expenses and revenues) if this extra space is rented and results in a total of 320 memberships in the first year. (6,000) |
Quoting Ag92 (Reply 10): Now let me be absolutely honest, and if feelings are hurt then I apologize BUT this is too simple maths, I mean you are not 21-25 if so, then I'm sorry how did you not only pass your maths but also any other exam related to maths such as Physics ever in your life. These are the sort of stuff 12-14 year olds do and the last one is literally ab -cd sort of question where abcd are given right in front of you with no calculations. I only did this because I am going to undertake my sats soon and the one thing I don't want to get wrong is maths, I aim for a perfect in that because I know its not gonna be that hard but really this is simpler then the simplest middle school questions. I say you may not even be 13 year old |
Quoting ANITIX87 (Reply 6): Quoting KLM672 (Reply 5): If a person puts 1 Cent in a piggy bank on the first day, 2 cents on the second, 3 cents on the third etc, how much money will be in the bank after 50 days? ($12.75) Just keep adding 1+2+3+4+5+6+...+50. You get 1,275 cents, or $12.75. |
Quoting KLM672 (Reply 12): Isnt there a faster trick to that...? I am trying to recall how we did it but its not coming to me. |
Quoting Oly720man (Reply 9): This is the sum of a series which is 0.5*n*(n+1), here 0.5*50*51=0.5*2550 = 1275 |
Quoting JRadier (Reply 14): I believe you it's true, however I fail to see why that formula is the way it is, would you care to explain? Not to second guess you, I just hate to not understand it Silly. |
Quoting KLM672 (Reply 19): DTW- That was a different math, nothing crazy going on, just bad at math, still. |
Quoting JRadier (Reply 14): I believe you it's true, however I fail to see why that formula is the way it is, would you care to explain? |
Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) |
Quoting Mir (Reply 23): Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) |
Quoting Mir (Reply 23): This seems like it has to be a multiple choice, since 2, 10, 26, 37, 50, etc. are also valid answers. -Mir |
Quoting JRadier (Reply 14): This is the sum of a series which is 0.5*n*(n+1), here 0.5*50*51=0.5*2550 = 1275 |
Quoting ANITIX87 (Reply 6): Quoting KLM672 (Reply 5): On a blueprint, 1/4 inch represents 16 feet. If a drive way is 40 feet long, what is its length, in inches, on the map? (5/8) |
Quoting ANITIX87 (Reply 6): If 1/4 inch represents 16 feet, then you must see how many times 16 feet goes into 40. Therefore, 40/16 = 2.5. Now, multiply this by your original 1/4 inch, to get 5/8. |
Quoting KLM672 (Reply 3): A bag contains only red marbles, blue marbles, and yellow marbles. The probability of randomly selecting a red marble from the bag is 1/4, and the probability of randomly selecting a blue marble is 1/6. Which could be the total number of marbles in the bag? (12,26) |
Quoting ANITIX87 (Reply 6): Again, this must be multiple choice because there is in infinite number of answers. Without the other choices, it is hard to give you a concrete approach to a question like this. |
Quoting KLM672 (Reply 28): On a calculator, how do I multiply 1/4*2.5? |
Quoting KLM672 (Reply 28): How do I find the rate of change? I am given a graph. |
Quoting MOBflyer (Reply 27): What was that about? |
Quoting KLM672 (Reply 31): Yeah, I tried that and I get 0.625. How do I then transfer that to 5/8? |
Quoting KLM672 (Reply 35): Sorry, I guess I don't see it. When I do that (625/1000) I get 1.6.... |
Quoting Mir (Reply 29): The change in the Y axis divided by the change in the X axis. Let's say you have a graph on which the Y axis represents the value of the car and the X axis represents time. You have two points, one at (0,12) and one at (5,9). The first one represents the car's value as $12,000 when you buy it (since time is 0) and the second represents its value five years down the road, where the car has devalued to $9,000. To find out how much it loses per year, divide the change in Y by the change in X. The Y goes from 12 to 9. 12-9=3. The X goes from 0 to 5. 0-5=-5. Therefore, your answer will be 3/-5, or -0.6. That's how much the car's value will change per year (-$600). This (change in Y divided by change in X) is also called the slope of the line (the m in the y=mx+b notation). -Mir |
Quoting KLM672 (Reply 37): According to this its -$3,000 not -600. |
Quoting Goldenshield (Reply 36): You are reversing the order of the computation. Instead of 625 / 1000, you did 1000 / 625. Basically, you need to reduce to the easiest common denominator. Since 625 is a nice, round 5, we'll use that. 625 / 5 = 125, therefore 625 / 125 = 5 Then, using the same divisor with the denominator, 1000 / 125, we get 8. Therefore, the reduction is 5 / 8. |
Quoting ANITIX87 (Reply 39): You may be confusing him. KLM762, just take all your choices and divide them. The one that comes out to your answer (0.625) will be the correct. Just be careful not to switch the operations like you did in post 35. It's the TOP number divided by the BOTTOM number. So, for example, 5/8 is equal to 5 divided by 8, which is 0.625. |
Quoting ANITIX87 (Reply 39): Just be careful not to switch the operations like you did in post 35. It's the TOP number divided by the BOTTOM number. So, for example, 5/8 is equal to 5 divided by 8, which is 0.625. |
Quoting KLM672 (Reply 40): Another problem is I am given an equation and I need to find the graph that matches it. |
Quoting KLM672 (Reply 43): y=1/2x+1 y=2x+1 y=-1/2x+1 y=2x+1 |
Quoting KLM672 (Reply 43): In the rectangles below (ok, so they arent here) the ratio of length to width is the same. Find the length of the larger rectangle. the smaller one is 20ft ("side")x30ft("top"). The bigger one is just 50ft on the "side". The anwser is 75ft |
Quoting Mir (Reply 29): The change in the Y axis divided by the change in the X axis. Let's say you have a graph on which the Y axis represents the value of the car and the X axis represents time. You have two points, one at (0,12) and one at (5,9). The first one represents the car's value as $12,000 when you buy it (since time is 0) and the second represents its value five years down the road, where the car has devalued to $9,000. To find out how much it loses per year, divide the change in Y by the change in X. The Y goes from 12 to 9. 12-9=3. The X goes from 0 to 5. 0-5=-5. Therefore, your answer will be 3/-5, or -0.6. That's how much the car's value will change per year (-$600). This (change in Y divided by change in X) is also called the slope of the line (the m in the y=mx+b notation). |
Quoting KLM672 (Reply 25): Quoting Mir (Reply 23): Quoting KLM672 (Reply 5): Let S be the set of all integers that can be written as n2 + 1, where n is a nonzero integer. Which integers is in S? (5,17) Quoting Mir (Reply 23): This seems like it has to be a multiple choice, since 2, 10, 26, 37, 50, etc. are also valid answers. -Mir Yes, 1,5,17,28, and 36 |