Use the image below to answer the following question What relationship do the ratios of sin x° and cos y° share?

The ratios are opposites. (4 over 5 and negative 4 over 5)
The ratios are both negative. (negative 4 over 5 and negative 4 over 5)
The ratios are both identical. (4 over 5 and 4 over 5)
The ratios are reciprocals. (4 over 5 and 5 over 4)

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

Which of the following are accepted without proof in a logical system? check all that apply.

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?