A number sentence is shown below: 50 and 1 over 2 Division sign 1 over 4 equals 202 Part A: Create a story or context for this number sentence. (4 points) Part B: Rewrite this number sentence using multiplication. (2 points) Part C: Give a verbal explanation that describes how these three numbers are related. (4 points) Please help

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

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