• Factor x^2y-xyb-abx+ab^2?

    The instructions say to use the difference of the squares. I am a science teacher teaching computer summer school and can't explain how to do this. If I knew process of of one of these, I could help many students.....Thanks!
    The instructions say to use the difference of the squares. I am a science teacher teaching computer summer school and can't explain how to do this. If I knew process of of one of these, I could help many students.....Thanks!
    2 answers · Mathematics · 6 years ago
  • How much per hour for babysitting?

    I am an experienced 16 year old sitter in Florida. i don't usually get paid by the hour. A woman with four children (10, 8, 6, and 4) wants to know how much I charge per hour. Any ideas? Thanks
    I am an experienced 16 year old sitter in Florida. i don't usually get paid by the hour. A woman with four children (10, 8, 6, and 4) wants to know how much I charge per hour. Any ideas? Thanks
    3 answers · Parenting · 7 years ago
  • My blackjack has gone dark?

    My blackjack has gone dark. I cannot turn it on, but there is a red light on the top that has remained lit. Does anyone know how to fix this? It continues to make noise when I plug it in and unplug it. The led lights behind the keys don't seem to light up either. Thanks
    My blackjack has gone dark. I cannot turn it on, but there is a red light on the top that has remained lit. Does anyone know how to fix this? It continues to make noise when I plug it in and unplug it. The led lights behind the keys don't seem to light up either. Thanks
    1 answer · Cell Phones & Plans · 9 years ago
  • How much to charge for royalties on a product? Or no royalties at all--full payment up front?

    My husband has invented a product. He is meeting with a national distributor tomorrow who is interested in purchasing the patent, and taking the product in for his production, and industry catalog sales. This guy is looking at possible 3-5 mil in profits if it is sold for the price that my husband has been selling it for the past three... show more
    My husband has invented a product. He is meeting with a national distributor tomorrow who is interested in purchasing the patent, and taking the product in for his production, and industry catalog sales. This guy is looking at possible 3-5 mil in profits if it is sold for the price that my husband has been selling it for the past three months. We would like to sell to this man. How do we decide on a price? The potential buyer has mentioned an initial payment, and then royalties per unit... or perhaps, royalties based on gross sales? Can someone help us figure out how to handle this, please? We could possibly make hundreds of thousands.... or make a mistake by hundreds of thousands!! Thanks for reading and thinking!
    1 answer · Other - Business & Finance · 9 years ago
  • Simple english to spanish question?

    How do you say "You don't understand what I am saying." in spanish? Thanks.?
    How do you say "You don't understand what I am saying." in spanish? Thanks.?
    6 answers · Languages · 9 years ago
  • Specific Heat challenge...?

    I've done the problem and come up with 777 kj. The bok says 732 kj...hmmmm.... your thoughts? How much energy in joules is required to warm 225 g of ice from -46.8 to 0.0 deg C, melt the ice, warm the water form 0.0 to 100.0 deg C, boil the water, and heat the steam from 100.0 to 173.0 deg C? Ref info: delta Hfusion = 6.01 kj/mole, ... show more
    I've done the problem and come up with 777 kj. The bok says 732 kj...hmmmm.... your thoughts? How much energy in joules is required to warm 225 g of ice from -46.8 to 0.0 deg C, melt the ice, warm the water form 0.0 to 100.0 deg C, boil the water, and heat the steam from 100.0 to 173.0 deg C? Ref info: delta Hfusion = 6.01 kj/mole, delta H vap = 40.7 kj/mole, spht of ice = 2.03 j/g deg C, spht of liq water = 4.184 j/g deg C, spht of steam = 2.01 j/g deg C My figures: heating to 0 deg C = 21.4 kj melting: 75.0 kj heating to 100 = 94.1 kj vaporizing = 508 kj heating to 173 = 78.2 kj Where did I go wrong???? Thanks.
    1 answer · Chemistry · 10 years ago
  • Thermodynamics Entropy Units?

    I am looking to find units for entropy ( delta S). Is it always J/K? Can anyone help me? Thanks.
    I am looking to find units for entropy ( delta S). Is it always J/K? Can anyone help me? Thanks.
    3 answers · Chemistry · 10 years ago
  • Conductivity: diamond vs metals?

    From a chemistry and physics teacher... we are looking for support from other sources. Physics teacher has heard that diamonds are far more conductive electrically than metals. Why would that be? Is it due to the ionic structure? Electrons aren't loose like metals... We'd like to explain the phenomenom if it is true. Thanks.
    From a chemistry and physics teacher... we are looking for support from other sources. Physics teacher has heard that diamonds are far more conductive electrically than metals. Why would that be? Is it due to the ionic structure? Electrons aren't loose like metals... We'd like to explain the phenomenom if it is true. Thanks.
    3 answers · Chemistry · 10 years ago
  • Gas law stoichiometry?

    I've done the problem. I get 2.69 L. The book says 9.13 L. I think I am right (of course!) Please check my work. Ammonia is formed industrially by reacting nitrogen and hydrogen gases. How many liters of ammonia gas can be formed from 13.7 L of hydrogen gas at 93.0 deg C and a pressure of 40.0 kpa? I used N2(g) + 3H2(g) ... show more
    I've done the problem. I get 2.69 L. The book says 9.13 L. I think I am right (of course!) Please check my work. Ammonia is formed industrially by reacting nitrogen and hydrogen gases. How many liters of ammonia gas can be formed from 13.7 L of hydrogen gas at 93.0 deg C and a pressure of 40.0 kpa? I used N2(g) + 3H2(g) --> 2 NH3(g) If you find my mistake, please let me know! Thanks!
    1 answer · Chemistry · 10 years ago
  • Rehearsal dinner menu/venue?

    This is my 2nd adn hisrd wedding, but because we have 4 children we are having a modified wedding. Family and friends are coming in from all over the country. 50 guests total at a turkish restaurant. Here's my question. We live in Florida. The wedding is in June--hot. We want to have dinner the night before for immediate family and the... show more
    This is my 2nd adn hisrd wedding, but because we have 4 children we are having a modified wedding. Family and friends are coming in from all over the country. 50 guests total at a turkish restaurant. Here's my question. We live in Florida. The wedding is in June--hot. We want to have dinner the night before for immediate family and the out-of-towners. Any thoughts of a menu? My mom has volunteered to foot the bill-- a double edged sword. I would like something interesting, but simple. Catering is probably out, at least 100% catering. But we could bring in pieces of the meal. Buffet would be better so people who haven't seen each other (in years) could visit. Is there an answer? Thanks so much for your help!
    5 answers · Weddings · 10 years ago