There is a HUGE pile of bicycles and tricycles. Altogether, there are 15 "cycles" . There are also a total of 41 wheels. How many of each cycle are there? Give your answer in the form of (tricycles, bicycles).

Which choice represents the sample space ,s for this event

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.