Category: Essays

Find the LCM of 29 and 116

Solve the proportion. x//10

Which property of the real numbers is illustrated by the following statement?

Perform the addition on the 12-hour clock. 5 + 11

Find the value of 327 in the mod 7 system

Simplify: 5(-3x + 3)

Evaluate the formula P = 2l + 2w when l = 4 in. and w = 4 in

Joe has $10,000 to purchase a used car. If the sales tax is 7% and the fee for title and license plates is $200, what is the maximum amount Joe can spend for a car?

Write 23 in base five

Which property is not true for all numbers on the 12-hour clock?

Evaluate (6 – 6) – 5 in the mod 12 system

Solve the inequality: x + 14 < -11

Which property of the real numbers is illustrated by the following statement?

Convert 3214five to base ten

Find the value of y in the mod 9 system.
5 x

Write 629 using Roman numerals

A community college has 3,000 students and 90 instructors. The college plans that enrollment will be 3,500 next year. How many new instructors should be hired if the college wants to keep the same student to instructor ratio?

Simplify. 88 · 8-8

Three times a number is 10 less than five times the number. Find the number.

Write XIV in the Hindu-Arabic system

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This Discussion should be an eye opener for most students. We will look at our food shopping trends and how we spend our money. The outcomes should reveal some interesting facts.

Save a cash register receipt from a shopping trip to the food market, or borrow one from a family member or friend. The cost of four prepackaged food items that are sold by weight and the cost of at least three fresh fruits, or vegetables need to appear on the receipt. If you have no access to a receipt with these items, then you will need to go to the store and write down the cost information, or find a grocery advertisement online. Do not use liquids such as milk, juice, or soda because these are sold by volume and not by weight. Also, do not include ingredients like flour, sugar, oil, dry beans, etc. because these items are not prepackaged foods. Fruits and vegetables are sold by the pound. Add up your prices per pound for the fruits and vegetables and find the average cost per pound. (Example: If bananas are .79 per pound and apples are .59 per pound, the average is calculated like this: (.79 + .59)// per pound on average for the two fruits.) Locate the weight of your prepackaged food items. (For example, on a box of Frosted Flakes it says 15 oz.) Add up all of the weights for your prepackaged items in ounces, and then add up all of the costs for your four prepackaged items. From the totals, find the average cost per ounce of prepackaged items. Convert your results to cost per pound. (Hint: How many ounces in a pound?) Now, compare the cost per pound of unprocessed food compared to prepackaged processed food.  Discuss your comparison. Are you amazed or did you expect these results?

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This Discussion will help us learn to develop our own mathematical models, write down the equations and then solve the equations for unknown values using algebraic methods.

Refer back to Week One Discussion and use the names and ages of yourself and the other two people you selected. Make sure one is older than you and one is younger than you. In years, how old was the older person when you were born? Write an equation that models how old in years each of you will be, when your ages add up to 150 years old. For example, if age and the eldest person was a year older than you, you would write their age as x + 1. Then the equation would be: x + (x+1) = 150. Explain the reasoning which helped you develop your equation. Solve for your future ages. Are your answers reasonable, do they add up to 150? In years, how old were you when the youngest person was born? At some point during the lives of you and the youngest person, your age will be three times his/her age at that moment. Write an equation which models how old in years each of you will be when you are three times as old as the younger person. Explain the reasoning which helped you develop your equation. Solve the equation for your ages when you are three times as old as the youngest person. Are your answers reasonable? Respond to at least two of your classmates’ postings. Check their equations and investigate for mathematical errors. Help with a constructive critique.

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Determine whether or not the network is traversable

Janet invested $26,000, part at 6% and part at 3%. If the total interest at the end of the year is $1,080, how much did she invest at 6%?

The difference between the ages of two friends is 37 years. The sum of their ages is 55 years. Find the age of the older friend

Write the equation in the slope-intercept form.
4x – 10y = 11

Identify angles 2 and 7 as alternate interior, alternate exterior, corresponding, or vertical

Adult tickets for a play cost $19 and child tickets cost $17. If there were 36 people at a performance and the theatre collected $646 from ticket sales, how many children attended the play?

Which quadrilateral is a trapezoid?

Determine whether or not the network is traversable

Determine whether the system is consistent, inconsistent, or dependent.
2x + 2y = 2
6x + 6y = 6

Find the perimeter

Which quadrilateral is a rhombus?

Classify the triangle according to sides

Find the slope of the line passing through the points (0, -4) and (-6, 7).

Classify the triangle according to sides and angles.

Find the coordinates of the x-intercept.
2x + y = -6

Find the slope of the line passing through the points (-3, -10) and (4, 5).

The amount of revenue a company makes per day by selling x items is given by the function f(x) = 14x – 0.2x2. How many items should be sold if the company wants to maximize their profit?

A tent is shaped like a pyramid. It has a square base measuring 8 feet on a side and a height of 6 feet. What is the volume of the tent?

Identify angles 4 and 5 as alternate interior, alternate exterior, corresponding, or vertical.

Find the vertex of the parabola.
y = -2x2 + 12x – 13

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This Discussion will concentrate on functions and graphs. Understanding the definitions of words is the essence of mathematics. When we understand the meaning of words, finding a solution is much easier because we know what task the problem is asking us to complete.

Part 1

In your own words, define the word “function.” Give your own example of a function using a set of at least 4 ordered pairs. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and 5. Your example should not be the same as those of other students or the textbook. There are thousands of possible examples. Explain why your example models a function. This is extremely important for your learning. Give your own example of at least four ordered pairs that does notmodel a function. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and +5.  Your example should not be the same as those of other students or the textbook. There are thousands of possible examples. Explain why your example does not model a function.

Part 2

Select any two integers between -12 and +12 which will become solutions to a system of two equations. Writetwo equations that have your two integers as solutions. Show how you built the equations using your integers.Your solution and equations should not be the same as those of other students or the textbook. There are infinite possibilities. Solve your system of equations by the addition/subtraction method. Make sure you show the necessary 5 steps. Use the example on page 426 of Mathematics in Our World as a guide. Respond to at least two of your classmates’ postings. Do you agree or disagree that their examples model functions? Follow their 5 steps. Do their calculations follow the correct rules of algebra?

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This Discussion tests your ability to use a ruler and convert from Standard English measure to Metrics. You will then apply your knowledge of the geometric measurements of area and volume through real world problems.

Choose a room in your house. Measure the length, the width, and the height. Make sure you use feet and inches. Most rooms are not a whole number, such as 10 feet; they are 10 feet and 3 inches, or 9 feet 6 inches, etc.
NOTE: Do not use decimal numbers for the feet. For example, do not write 10.3 to mean 10’3”, because that is incorrect. Convert the measurements to all inches for step 2, and then convert back to square feet for step 3. Record your dimensions and, using the appropriate formula, find the surface area of the room. A gallon of paint covers about 350 square feet. How many gallons would be required to paint the room? Round up to the nearest gallon. If a gallon of paint costs $22.95 plus 8% tax, what would be the total cost to paint the room? One inch is equivalent to 2.54 centimeters. Convert your English measurements to metrics. Record each dimension in centimeters. Show your conversions. Find the volume in cubic centimeters. Be neat and precise. If each dimension (length, width, and height) is doubled, what happens to the volume of the room?  Show your work. Respond to at least two of your classmates’ postings. Review their calculations and determine if their results seem reasonable for the size of the room.

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Following completion of your readings, complete exercise 4 in the “Projects” section on page 620 ofMathematics in Our World.

Make sure you build or generate at least five more Pythagorean Triples using one of the many formulas available online for doing this. After building your triples, verify each of them in the Pythagorean Theorem equation.

The assignment must include (a) all math work required to answer the problems as well as (b) introduction and conclusion paragraphs.

Your introduction should include three to five sentences of general information about the topic at hand. The body must contain a restatement of the problems and all math work, including the steps and formulas used to solve the problems. Your conclusion must comprise a summary of the problems and the reason you selected a particular method to solve them. It would also be appropriate to include a statement as to what you learned and how you will apply the knowledge gained in this exercise to real-world situations.

The assignment must be formatted according the APA (6th edition) style, which includes a title page and reference page. For information regarding APA samples and tutorials, visit the Ashford Writing Center, within the Learning Resources tab on the left navigation toolbar, in your online course.

Carefully review the Grading Rubric for the criteria that will be used to evaluate your assignment.

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A tie pin which sells for $200.00 has a markup rate of 30% on the selling price. Find the amount of the markup and the cost.

Find the missing value

A single card is drawn from a deck. Find the probability of selecting a 3 or a club

A box contains five blue, eight green, and three yellow marbles. If a marble is selected at random, what is the probability that it is yellow?

The odds against an event are 8:8. Find the probability that the event will occur.

Express 3.46 as a percent

A coat was reduced from $250 to $200. Find the percent of the reduction in price

Express 81.6% as a decimal

A company borrowed $1500. It must make monthly payments of $40.50 for 42 months to pay off the loan. Use the constant ratio formula to find the annual percentage rate

A building has a market value of $229,000.00. If it is assessed at 50% of market value and the tax rate is 40 mills, find the property tax

A lottery has one $2000 prize, two $1000 prizes, and ten $500 prizes. Two thousand tickets are sold at $5 each. Find the expectation if a person buys two tickets.

Dr. Sand borrowed some money to buy new furniture for her office. She paid $245.00 simple interest on a 3.5-year loan at 3.5%. Find the principal.

Find the missing numbers

Two dice are rolled. Find the probability of getting a sum greater than 8

A coat with an original price of $300.00 is on sale for $285.00. Find the percent of the markdown

The odds in favor of an event are 10:1. Find the probability that the event will occur

A box contains five blue, eight green, and three yellow marbles. If a marble is selected at random, what is the probability that it is not blue?

Find the maturity value

A coin is tossed and then a die is rolled. Find the probability of getting a 5 on the die given that the coin landed tails up

Katie had an unpaid balance of $1,734.50 on her credit card statement at the beginning of January. She made a payment of $165.00 during the month. If the interest rate on Katie’s credit card was 7% per month on the unpaid balance, find the finance charge and the new balance on February 1.

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The purpose of this Discussion is to analyze a financial plan that portrays a somewhat typical budgeting scheme. You will calculate expenses, a mortgage payment, and the effects of interest and financing on your budget. Show your math work for every answer and identify the answers with words.

Select the first three letters of your last name. Each letter has a numerical place value in the alphabet. For example, D is 4, L is 12, and Z is 26. Add the three place values together. For example, Wallace would yield WAL, which is 23+1+   Multiply your sum by 1500. This is your yearly income for Week Four Discussion 1.   Please use the following monthly expenses: Car payment = $283.15, Car insurance = $72, Utilities (includes water and power) = $242.77, Internet = $32, and Cell Phone = $79.95. You also have a yearly educational bill of $7980 which includes textbooks and classes. Calculate your monthly income.   What percent of your monthly income is the car payment? Subtract the sum of your monthly expenses. Use this value to calculate what percent of your income is now available to spend for food, clothing, and your rent or mortgage. Use the plan at the bottom of page 538, “Mathematics in Our World Revisited,” to calculate the monthly mortgage payment established by your monthly income. Assume you can afford a down payment equal to 25% of your yearly income. What is the total purchase price can you afford for a home? Would this amount allow you to purchase a home in the area where you live?

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This Discussion allows you to demonstrate your understanding of the similarities and differences between classical probability and empirical probability.

In your own words, describe two main differences between classical and empirical probabilities. Gather coins you find around your home or in your pocket or purse. You will need an even number of coins (any denomination) between 16 and 30. You do not need more than that. Put all of the coins in a small bag or container big enough to allow the coins to be shaken around. Shake the bag well and empty the coins onto a table. Tally up how many heads and tails are showing. Do ten repetitions of this experiment, and record your findings every time. State how many coins you have and present your data in a table or chart. Consider just your first count of the tossed coins. What is the observed probability of tossing a head? Of tossing a tail? Show the formula you used and reduce the answer to lowest terms. Did any of your ten repetitions come out to have exactly the same number of heads and tails?  How many times did this happen? How come the answers to the step above are not exactly ½ and ½? What kind of probability are you using in this “bag of coins” experiment? Compute the average number of heads from the ten trials (add up the number of heads and divide it by 10). Change this to the average probability of tossing heads by putting the average number of heads in a fraction over the number of coins you used in your tosses. Did anything surprising or unexpected happen in your results for this experiment? Write the sample space for the outcomes of tossing three coins using H for heads and T for tails. What is the probability for each of the outcomes? Which kind of probability are we using here? How come we do not need to have three actual coins to compute the probabilities for these outcomes? Respond to at least two of your classmates’ postings. Make sure you review their data and calculations and let them know if their probabilities seem accurate.

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