A 17 foot ladder is leaning on a tree. The bottom of the ladder is on the ground at a distance of 8 feet from the base of the tree. The base of the tree and the ground form a right triangle as shown. Find the distance, in feet, between the ground and top of the ladder

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2