Aspinner is divided into 5 equally sized segments colored blue, green, black, red, and yellow. suppose you spin the wheel 2 times. what is the probability of landing on the same color each time? give your answer as an exact fraction and reduce the fraction as much as possible.

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.