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Tutors Answer Your Questions about Linear Algebra (FREE)
Question 93978: When a cold yam is put into a hot oven to bake, the temp. of the yam rises. The rate, R,at which the temp. rises is governed by Newton's Law of Heating, which says that the rate is proportional to the temp. difference between the yam and the oven. If oven is 350 degrees and the yam is H degrees. Which can be used to model the temp. of the yam. Is it R=kh-350 or R=k(350-H) or R=k(H-350)?
Click here to see answer by bucky(1732)   |
Question 94345: A video game manufacturer is planning to market a 64-bit version of its game machine. The fixed costs are $570000 and the variable costs are $100 per machine. The wholesale price of the machine will be $120.
(a) How many game machines must be sold for the company to make a profit?
(b) How many game machines must be sold for the company to break even?
Click here to see answer by checkley71(8405) |
Question 94593This question is from textbook
: Some bank robbers leave town speeding at 70mph. 10 mintues later police gave chase traveling at 78 mph. How long will it take the police to overtake the robbers?This question is from textbook
Click here to see answer by checkley71(8405) |
Question 95478This question is from textbook
: A man deposited $6800 into two accounts. One account earns interest at 8% and the other at 10.5%. The total interest for one year is $669. Find the amount deposited in each account.This question is from textbook
Click here to see answer by stanbon(26259) |
Question 96901: A publisher is planning on producing a new textbook
The fixed costs are $240000 and variable costs is $20 per book
The sale price is $35.00 ech
let x be the number of books
a. express the cost function as a linear function of x
b. express the revenue function as a linear function of x
c. graph the cost and revenue function found in a and b
d.what is the breakeven point
Please help am at a grid lock
Click here to see answer by stanbon(26259) |
Question 97268This question is from textbook Algebra 1
: What are the length (l) and width (w) of a rectangle if the area is 13-1/2 square units and the length of one side is 1/5 the measure of the perimeter? Explain your reasoning.
8th grader needs some help & mom hasn't had an advanced math class in nearly 30 years. Any help would be appreciated.This question is from textbook Algebra 1
Click here to see answer by stanbon(26259) |
Question 97350: you are working on a project in woodshop. You have a wooden rod that is 72 in. long. You need to cut the rod so tha one piece is 6 inches longer than the other piece. How long should each piece be?
Click here to see answer by roseyposey(9) |
Question 98500This question is from textbook Mathematical ideas
: I have tried to solve this I can't seem to get it set up right. The force needed to keep a car from skidding on a curve varies inversly as the radius of the curve and jointly as the weight of the car and the square of the speed If 242 pounds of force keep a 2000 pound car from skidding on a curve of radius 500 feet at 30 miles per hour, what force would keep the same car from skidding on a curve radius 750 feet at 50 miles per hour?This question is from textbook Mathematical ideas
Click here to see answer by ankor@dixie-net.com(6691)  |
Question 98869This question is from textbook algebra 2
: You collect baseball and football card. Your uncle has an old collection of 360 cards that he gives to you. The collection has more baseball cards than football cards. In fact, it has 30 more baseball cards than twice the number
of football cards. How many of each type are in your uncle's collection?This question is from textbook algebra 2
Click here to see answer by doukungfoo(195)  |
Question 99074This question is from textbook 
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A caterer's total cost for catering a party includes a fixed cost, which is the same for every party. In addition the caterer charges a certain amouth for each guests. If it costs $300 to serve 25 guests and $240 to serve 40 guests, find the fixed cost and the cost per guestThis question is from textbook
Click here to see answer by 303795(562) |
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