Please Help with the math questions

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timer Asked: Jan 25th, 2019
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Question Description

The purpose of this graded assignment is to help you to obtain the necessary practice to fully comprehend the weekly learning objectives. You will have 7 attempts to complete each problem in the assignment and you will have access to the Help Me Solve This or View an Example features. The use of Help Me Solve This, however, will result in loss of attempt at the problem.

1.Rewrite the following statement using a number in scientific notation. My new music player has a capacity of 270 gigabytes. (Recall that giga means billion.) (Use scientific notation. Use the multiplication symbol in the math palette as needed.) 2. Rewrite the following statement using a number in scientific notation. The diameter of a certain bacterium is about 0.00000030. meters. (Use scientific notation. Use the multiplication symbol in the math palette as needed.) 3. Estimate the following quantities without using a calculator. Then find a more precise result, using a calculator if necessary. Discuss whether the approximation technique worked. a. 400,000 ×100 b. 5.9 million ×2.1 thousand c. 4 x 10⁹ ÷ (2.2 x 10⁶) a. The approximate value of 400,000 times ×100 is (Use scientific notation. Use the multiplication symbol in the math palette as needed.) 4. Use estimation to make the following comparison. Which is greater, the amount the average person spends in a month on coffee or the amount the average person spends in a month on gasoline? Choose the correct answer below. The amount a person spends on coffee in a month is greater The amount a person spends on gasoline in a month is greater 5. Could an average person lift the weight of $100 in dimes? (A single dime weighs approximately 2.27 grams.) Choose the correct answer below. A. No because the weight of 1000 dimes is about 50 pounds B. Yes because the weight of 1000 dimes is about 10 pounds C. Yes because the weight of 1000 dimes is about 1 pound D. Yes because the weight of 1000 dimes is about 5 pounds 6. Make an order of magnitude estimate of the following quantity. Explain the assumption used in your estimation. The number of times the average person's heart beats in a day Choose the correct answer below. A.8640; assuming an average person’s heart beats once every 10 seconds B.432,000; assuming an average person’s heart beats 5 times a second C.86,400 assuming an average person’s heart beats once a second D.1440; assuming an average person’s heart beats once a minute 7. Make an order of magnitude estimate of the following quantity. Explain the assumption used in your estimation. The amount of water the average person drinks in a year Choose the correct answer below. A. 50 gallons; assuming an average person drink 1 liter per day B.23 gallons; assuming an average person drinks 1 cup per day C.730 gallons; assuming an average person drinks 2 gallons per day D. 180 gallons; assuming an average person drinks 4 pints per day 8. What is the order of magnitude estimate of the amount of hours you spend in a shower or bath in a year? Choose the correct answer below. A. The order of magnitude estimate would be 3650 hours; assuming an average person spends 1 hour in the shower or bath per month B. The order of magnitude estimates would be 61 hours; assuming an average person spends 10 minutes in the shower or bath per day C. The order of magnitude estimates would be 6 hours; assuming an average person spends 1200 minutes in the shower or bath during a 3 month period D. The order of magnitude estimates would be 365 hours; assuming an average person spends 1 hour in the shower or bath per week 9. There are approximately 3.5 million deaths per year in country A. Express this quantity as deaths per minute. In country A, there are _deaths/min. (Type an integer or decimal rounded to one decimal place as needed.) 10. Estimates of the number of cells in the human body vary over an order of magnitude. Indeed, the precise number varies from one individual to another and depends on whether you count bacterial cells. Complete parts (a) through (c) below. a. Assume that an average cell has a diameter of 5 micrometers (5 x10-⁶ meter), which means it has a volume of 50cubic micrometers. How many cells are there in a cubic centimeter? _ cells per cm³ (Use scientific notation. Use the multiplication symbol in the math palette as needed. Round to two decimal places as needed.) 11. An issue of a magazine contained the following statement. Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. One day's discharge at its mouth, 3.6 trillion gallons, could supply all of country A's households for six months. Based on this statement, determine how much water an average household uses each month. Assume that there are 100 million households in country A. Country A uses approximately __ gallons per household per month. (Type a whole number.) 12. Restate the following fact as indicated. Approximately 33,600 citizens of a country died in automobile accidents in 2015. Express this toll in deaths per day. There were approximately __ deaths per day due to automobile accidents. (Round to the nearest whole number as needed.) 13. An issue of a magazine contained the following statement. Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. One day's discharge at its mouth, 3.5 trillion gallons, could supply all of country A's households for seven months. Based on this statement, determine how much water an average household uses each month. Assume that there are 100 million households in country A. Country A uses approximately __ gallons per household per month. (Type a whole number.)

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Asirieng
School: UCLA

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