Math Homework Answers & Questions

• You go to the doctor and he gives you 12 milligrams of radioactive dye. After 24 minutes, 8 milligrams of dye remain in your system.
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• Let W R3 be the plane in R3 which has equation x y + 2z = 0. Let T be the orthogonal projection onto W , i. for any vector v R3, T (v) = projW (v)...
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• The Australian 50 cent coin has the shape of a regular dodecagon, which is a polygon with 12 sides.Eight of these 50 cent coins will fit exactly on an Australian $10 note as shown. What fraction of th
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• A rectangle has sides of 6 and 8. I the rectangle is spun about one of the longer sides, forming a cylinder, what is the volume in terms of pi, of
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• jason is a salesperson in the electronics department of a store. he is 50% short of his goal for the week. his goal is to earn $680. for each cd...
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• A 5 gram weight is suspended from a string next to a ruler held vertically. The string is jiggled up and down and the graph of the POSITION of the...
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• Formulate a system of equations for the situation below and solve. and Mrs. Garcia have a total of $100,000 to be invested in stocks, bonds, and a...
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• Let G be the set of the fifth roots of unity. Use de Moivre's formula to verify that the fifth roots of unity form a group under complex...
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• a rental car agency charges a flat rate of $139 plus $30 per day to rent a certain car. another agency charges a fee of $13 plus $51 per day to rent...
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• A student determined that the ordered pair l(1,3) is a solution of the following system. x+y=-2 5x+y=5 His reasoning was that the ordered pair...
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• Take a position on whether or not the total area under a normal distribution is infinite. Provide an example to support your response. 1-Take a position on whether or not the total area under a norma
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• a tire company tests a particular model of tire and finds the tires to be normally distributed with respect to wear. The mean is 28,000 mi and the...
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• Suppose you run 5miles from your house to a friend's house at a speed of 7miles per hour. When the time comes to return home, you are tired and walk...
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• assume 450,000 people line up on the streets to see the Macy's Thanksgiving Parade in 2010. If attendance is expected to increase 30%.
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• A gas has a pressure drop of 2 psi along a 1000 ft length of straight pipe. The gas has a density of 0.07 lb/ft 3 and the pipe inside diameter is...
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• A sample of refuse is analyzed and found to contain 10% water (measured as weight loss on evaporation).
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• Show that the function f(x) = x^(1/3) is continuous at x = 1. Here we define for x positive x^(1/3) = l. {y gt; 0 : y^3 lt; x}.
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• Assume the readings on thermometers are normally distributed with a mean of 0 degreesC and a standard deviation of 1.00 degreesC.
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• Ted is not particularly creative. He uses the pickup line If I could rearrange the alphabet, I'd put U and I together.
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• A factory produces its own brine by dissolving salt in water.
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