Tutors Answer Your Questions about Exponential-and-logarithmic-functions (FREE)
Question 716005: I need help in finding quarterly interest. The question is: The bank guarantees to triple your money in 10 years if you open an account this month. The interest rate will be compounded quarterly. What is the quarterly interest rate?
Click here to see answer by lwsshak3(11628)  |
Question 720774: Use v = - 0.0098t + c ln R, where v is the velocity of the rocket, t is firing time and c is velocity of exhaust R is ratio of the mass of the rocket filled with fuel to the mass of rocket without fuel
Find the velocity of a space craft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.7 Km/s, and a firing time of 30s. Can the space craft achieve a stable orbit 300km above earth
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 725094: A sample of 800 grams of radioactive substance decays according to the function A(t)=800e^-0.028t, where t is the time in years . How much of the substance will be left in the sample after 10 years? Round to the nearest whole gram.
Click here to see answer by jsmallt9(3758) |
Question 725121: A professional basketball player has a vertical leap of 37 inches. A formula relating an athlete's vertical leap v, in inches, to hang time T, in seconds, is V=48T^2. What is his hang time ? Round to the nearest tenth.
Click here to see answer by Alan3354(69443)  |
Question 725118: Book sales on the internet (in billions of dollars ) in year x are approximated by f(x)=1.84+2.1 .in x, where x=0 corresponds to 2000. How much will be spent on internet book sales in 2008? Round to the nearest tenth.
Click here to see answer by jsmallt9(3758) |
Question 726261: Stuck on solving this type of question.
x^8 + x^16 = 1.
Also if you have time
2*x^16(x^(8)-1) = x^24 - 1
These are arising in financial mathematics problem I am working on.
I do know the answers as they are given, but no idea how to simplify or solve this problem by hand.
Click here to see answer by stanbon(75887) |
Question 726265: When interest is compounded continuously, the balance in an account after t years is given by P(t)=PO^e^kt, where PO is the initial investment and k is the interest rate. Suppose that PO is invested in a savings account where interest is compounded continuously at 8% per year. Express P(t) in terms of PO and 0.08
Click here to see answer by stanbon(75887) |
Question 726619: Skid mark analysis is one way to estimate the speed a car was traveling prior to an accident. The speed, s, that the vehicle was traveling in miles per hour can be approximated by the formula s=square root 30df, where d represents the length of the skid marks in fee and "f" represents the drag factor of the road. A vehicle that was involved in an accident on an asphalt road was traveling at a speed of 45 mph when it started skidding. If the drag factor for asphalt is 0.75 find the length of the skid marks made by the car. The skid marks made by the car were approximately___________ feet long.
Click here to see answer by stanbon(75887) |
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