Algebra Answers

Achieve $225,500 at 8.65% compounded continuously for 8 years, 145 days

A, B & C can separately do a work in 2, 6 & 3-days respectively. Working together how much time would they require to do it? If the work earns them Rs 960, how should they divide the money?

I have the following problem...Achieve $225,500 at 8.95% compounded continuously for 8 years, 125 days. I have come to this...225,500 = Pe^.746650707 but I do not know how to go any further. Can you help?

If it takes 16boys 15hrs to do a work how long will it take 24boys

If the average increase in an infection rate is an 8% annual increase 2001-2009 is the graph going to be exponential ?

Software filters rely heavily on “blacklists” (lists of known “phishing” URLs) to detect fraudulent e-mails. But such filters typically catch only 15 percent of phishing URLs. Jason receives 10 phishing e-mails.

(a)
What is the expected number that would be caught by such a filter? (Round your answer to the next whole number.)

Expected number

(b)
What is the chance that such a filter would detect none of them? (Round your answer to 5 decimal places.)

Probability

Cai, mark,and Jen were raising money for school. Cai collected 2 1/2 times as mark mark collected 2/3 as much as Jen. Who collected the most? Who collected the least? Explain

A tank can be filled with 2 pipes in 6 minutes while the first pipe alone would require 10 minutes. How long will it take for the second pipe alone to fill the tank?

Scientists are studying the temperature on a distant planet. They find that the surface temperature at one location is 30 Celsius. They also find that the temperature decreases by 3 Celsius for each kilometer you go up from the surface.
Let represent the temperature (in Celsius), and let be the height above the surface (in kilometers). Write an equation relating to , and then graph your equation using the axes below

a car travels at constant speed for 48 kms. the car increases its speed by 1 kph and covers the same 48 km but 4 hours faster, so what was the original speed of the car??