Tutors Answer Your Questions about Finance (FREE)
Question 1106913: A hot drink is taken outside on a cold winter day when the air temperature is −7°C. According to a principle of physics called Newton's Law of Cooling, the temperature T (in degrees Celsius) of the drink 't' minutes after being taken outside is given by
T(t) = −7 + Ae^(−kt),
where A and k are constants.
(a)
Suppose that the temperature of the drink is 86°C when it is taken outside. Find the value of the constant A.
(b)
In addition, suppose that 20 minutes later the drink is 29°C. Find the value of the constant k.
(c)
What will the temperature be after 28 minutes?
(d)
When (i.e., after how many minutes) will the temperature reach 0°C?
Click here to see answer by rothauserc(4718)  |
Question 1107145: A uniform steel beam has a mass of 1000 kg. On it is resting half of an identical beam, as shown in Fig. 9-44. What is the vertical support force at each end?
left end
___N (upward)
right end
___N (upward)
Figure 9-44
Click here to see answer by Fombitz(32388)  |
Question 1107095: 5-2 (Compound value solving for n) how many years will the following take?
a. $500.00 to grow to $1,039.50 if invested at 5 percent compounded annually
b. $35 to grow to $53.87 if invested at 9 percent compounded annually
c. 100 to grow to $298.60 if invested at 20 percent compounded annually
d. $53 to grow to $78.76 if invested at 2 percent compounded annually
Click here to see answer by Theo(13342)  |
Question 1107082: I need to know how to write an equation for each line segment in a triangle and be able to describe relationships I notice about the line segments and equations. Side A has 2 units, side B has 2 units, and side C has 4 units. Thanks! -Jessie @jessiejo0613@yahoo.com or @2018jedmunds@newcastle.k12.ca.us
Click here to see answer by josgarithmetic(39617) |
Question 1107081: One solution contains 2 parts salt to 8 parts water, and another contains 3 parts salt to 5 parts water. How much of each should be mixed together in order to obtain 280 quarts of a solution that is 3 parts salt to 7 parts water?
ANSWER: __ quarts and ____ quarts respectively
Thanks for helping! <3
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1107296: Rocco wants to calculate the cost of covering the floor of his family room with tile. The floor measures 15 feet 5 inches by 12 feet 6 inches. He chooses rectangular tiles that are 12” by 18”. A box of 20 tiles costs $70.00. How many boxes must Rocco buy? What is the total cost?
Click here to see answer by rothauserc(4718)  |
Question 1107374: You ride your bike to your friend's house after school. To get there, you bike due south for 6 miles and then due east for 4.5 miles. To get home, you take a shortcut that is a diagonal path. What is the distance of the diagonal path? Round your answer to the nearest tenth
Click here to see answer by josgarithmetic(39617) |
Question 1107386: Homeward Hardware buys cat litter for $6 less 20% per bag. The store's overhead is 45% of cost and the owner requires profit of 20% of cost.
For how much should the bags be sold?
What is the amount of markup included in the selling price?
What is the rate of markup based on selling price?
What is the rate of markup based on cost?
What is the break-even price?
What operating profit or loss is made if a bag is sold for $6?
Click here to see answer by Boreal(15235)  |
Question 1107553: Using the equation below for delivery costs, give the slope of the equation. (Let C be the fee in dollars for special delivery m miles over the first 10 miles.)
C = 0.25m + 7
Explain the slope's meaning in this situation. (Include units with your numerical answers.)
It means that each mile over -------- will increase the delivery fee by -------
Click here to see answer by stanbon(75887) |
Question 1107425: A carter prepares three times as many pizzas as she usually prepares for a large party.She usually prepares 5 pizzas.The carter also estimates that each guest will eat 1/3 of a pizza.Write an expression that represents this situation.Then solve for the number of people the carter’s pizzas can serve.
Click here to see answer by josgarithmetic(39617) |
Question 1107753: A television commercial advertises that a certain type of light bulb will last on average, 200 hours longer that three times the life of another type of light bulb. If consumers tests show that the advertised bulb lasts 4700 hours, how many hours must the other type of bulb last for the advertisers claim to be valid?
Click here to see answer by Theo(13342)  |
Question 1107760: A town’s population has been increasing at a constant (linear) rate. In 2010 the population was 46,020. By 2012 the population had increased to 52,070. Assume this trend continues.
A.The town's predicted population in the year 2020 is:
B.In what year will the town's predicted population be 103495 ?
Click here to see answer by Boreal(15235)  |
Question 1107749: A towns population has been increasing at a constant (linear) rate. In 2010 the population was 46,020. By 2012 the population has increased to 52,070. Assume this trend continues.
The towns predicted population in 2020 is?
In what year will the towns predicted population be 103495?
Click here to see answer by Boreal(15235)  |
Question 1107727: suppose you hold a deiversified portfolio consisting of a $7500 investment in each of 20 different common stock.The portfolio beta is equal to 1.12.Now,supose you have decided to sell one of the stocks in your portfolio with a beta equal to 1.0 for $7500 and to use these proceeds to buy another stock for your portfoilo.Assume the new stocks beta is equal to 1.75.calculate your portfolio is new beta
Click here to see answer by addingup(3677)  |
Question 1107772: Homeward Hardware buys cat litter for $6 less 20% per bag. The store's overhead is 45% of cost and the owner requires profit of 20% of cost.
For how much should the bags be sold?
What is the amount of markup included in the selling price?
What is the rate of markup based on selling price?
What is the rate of markup based on cost?
What is the break-even price?
What operating profit or loss is made if a bag is sold for $6?
Click here to see answer by addingup(3677)  |
Question 1107722: PT Company is considering investing in a particular project. The initial investment cost is $. 200,000. It is expected that the project may generate a benefit for 5 years as shown below:
Year Operating cost Annual cash inflow
0 200,000 --
1 15,000 $. 80,000
2 18,000 50,000
3 14,000 30,000
4 2,000 40,000
5 1,000 45,000
Additional information:- A discounting Rate is 9% and PV for year 0, 1, 3, 4, and 4, and 5 are 1, 0.92, 0.84, 0.77, 0.71 and 0.65 respectively
Required:
A. Calculate the Net percent Value of the project
B. If you are the project adviser of PT Company would you accept the project or reject? Why?
Click here to see answer by Theo(13342)  |
Question 1107721: A company is considering investing on a particular project. The alternative projects available are: Project A that costs $. 300,000, and Project B that Costs $. 170,000. The net cash inflows estimates are as follows:
Net Cash Inflow
Year Project A Project B
1 40,000 30,000
2 50,000 50,000
3 90,000 70,000
4 100,000 30,000
5 40,000 45,000
A. Calculate payback period for each project
B. Which project do you think will have shorter payback period?
Click here to see answer by Theo(13342)  |
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