Share
Explore BrainMass

Fractions and Percentages

Word Problem : Calculating an Extra Grade from Percentages

One of the students in my class was absent the day of the test. The teacher announced that the class average for the 24 students who took the test was 75%. After the other student came back and took the test, the teacher announced that the class average had increased to 76%. Explain how you calculate what the absentee student

Mutually Exclusive

Consider the estimates below. If the alternatives are mutually exclusive and the MARR is 15% per year, the one(s) that shoild be selected is (are) ? Incremental Rate of Return, %, when Initial Alternative Compared with Alte

Statistics : Sampling of Waybills, Percentage Errors

The Chesapeake and Ohio Freight Study A sample of 2072 waybills from a population of 22,984 waybills was used to estimate the total revenue due C&O. The estimate arrived at was $64,568. Because all 22,984 waybills were avaliable, a census could be taken to determine exactly the total revenue due C&O and thereby reveal the a

MiniMax and Decision Tree Payoff Questions

For the attached problem, I need help with c, d, and e. For a) I get Decision B For b) I get Decision C The answers for c, d, and e were shown in class to be as follows, but I need to see how they were obtained: c) Decision A d) EV(A)= 695 (best) EV(B)= 385 EV(C)= 500 e) EVPI=230 Please show m

Finding Percentages

How do I go about finding 10% of a number, any number. For example, What is ten percent of 1,648?

Addition and Substraction of Fractions

This is for OTA #101733 only! 1. Find the LCM of 16 and 40. ____a. 40 __x_b. 80 ____c. 120 ____d. 640 2. Add and Simplify: 4/5+3/4 ____a. 7/20 ____b. 7/9 _x__c. 31/20 ____d. 17/9 3. Subtract and simplify: 8/15-2/9 _x__a. 2/45 ____b. 16/135 ____c. 40/135 ____d. 14/45 4. Whic

Addition and Substraction of Fractions

This is for OTA #101733 only? 1. Find the LCM of 16 and 40. ____a. 40 __x_b. 80 ____c. 120 ____d. 640 2. Add and Simplify: 4/5+3/4 ____a. 7/20 ____b. 7/9 _x__c. 31/20 ____d. 17/9 3. Subtract and simplify: 8/15-2/9 _x__a. 2/45 ____b. 16/135 ____c. 40/135 ____d. 14/45 4. Which of the follow

Ratios and Equal Ratios

How do we use ratios and of what value is it? How would I figure out equal ratios? Give examples. Thanks

Spot rates

How would I calculate the 1 yr forward rates over the next 3 years for spot rates of Yr 1 .050 Yr 2 .054 Yr 3 .059 Yr 4 .066 I just need the formulas, not the answers.

Key Metrics and Ratios for Abercrombie and Fitch Company

Using Abercrombie and Fitch Company (data attached): You are interested in learning moe about from an investment standpoint. Identify KEY METRICS and RATIOS of the company that will give a good indication of how "investment worthy" it is. 1) List the key financial metrics and ratios for Abercrombie and Fitch for that comp

Basic Business Statistics : Frequency Distributions and Percentages (7 Problems)

19. The data displayed below represent monthly phone bills for a random sample of small business customers. 208 133 165 179 258 212 178 178 209 212 150 198 137 258 277 145 234 176 209 220 209 160 151 279 177 199 212 188 162 125 221 147 215 245 198 245 275 180 203 226 Which of the following would be the most appropriate

Percentage

Given a sales tax rate and the final price paid, how do I determine how much of the final price was the tax? For example, if I spent $15.83, how much of that was the sales tax whose rate is 8%?

Interpret the Data Given - Women in the Army

Given the information below (and attached), please determine: Are women being denied the opportunity to join the Army because they are too short or too tall? If the required women's height for the Army is between 58 and 80 inches. The Mean = 63.3, and the SD = 2.5 What percentage of women meet that height requirement?

Key Financial Ratios that Measure Stability of a Company: How investors assess the stability of a public company? What are the key financial ratios that measure the stability of an organization? Define stability. Calculate these ratios per the attached file using Excel spreadsheet.

How investors assess the stability of a public company? What are the key financial ratios that measure the stability of an organization? Define stability. Calculate these ratios per the attached file using Excel spreadsheet. File attached for a analysis of financial ratios for the company. Balance Sheet as of December

Solution Concentrations : Percentages and Amount of Concentrate Needed

I am doing an embalming course and need to work out percentages , e.g of question. A container will hold 1 ltr, you will need the following solutions for different purposes, how much concentrate will you need in each case. 2% solution 1 in 20 solution 4 in 50 solution a 5.5 solution 1 in 3.5 solution. Can you show m

Percentages

If 40% of members of a club play tennis and there are 20 tennis players, how many club members are there?

Prove that positive real numbers correspond bijectively.

Please see the attached file for the fully formatted problems. Here is the problem: Prove that positive real numbers correspond bijectively to decimal expansions not terminating in an infinite string of 9's as follows. The decimal expansion of is where N is the largest integer smaller than is the largest integer is th

Ratios

If there are 74 nests containing 11 eggs each and 9 nests containing 14 eggs each what would be the ratio of this expressed in the form of 1:x, where x is the number expressed to one decimal place. I know the basics : 9:74 but not sure what to do after that.

Partial Fractions

What are tha partial fraction decompositions: See attachment for details What are the values of: See attachment for details (residual calculation, results and values) Please see the attachment for full questions and details

Find the interest

Find the interest earned at the end of the first year on 8,400.00 invested at 4% interest

Percent Body Fat

The formula used to calculate the percentage of body fat for men is %body fat = (-98.42+4.15w-0.082b)/b where w is the waist measurement in inches and "b" is the total body weight in pounds. What is the body fat for a man weighing 156 pounds and waist measurement 32 inches. Round to the nearest integer.

COLA Adjustment effect on Salary

Alan's annual salary is $20,040. Next month he will receive a 5.5% cost of living adjustment and a 4% merit increase. What will be his new annual salary? a.$22,338 b.$21,943.80 c.$23,263.00 d.$21,22.00 e.not given

Finance : Percentages

A technician checked a sample of a 160 portable radios. She found 7 of the radios defective. If more than 5% of the sample is defective, the process is out of control. What is the exact percent of the sample that is defective? a.4% b.3.98% c.5.76% d.4.23% e.not given

Mathematical Modelling

Please see the attached file for the fully formatted problems. A long, thin rod is clamped at its lower end and a mass M is attached to its upper end. The coordinates (x,y) of any point on it satisfy the equation. where E, I and a are constants. Given that x = 0 when y = 0 and x = a when y = L show that where H