Five friends Adam, Bipin, Chen, Dana and Erica all take a maths test. Their teacher decides not to tell them their individual marks but gives
them the following information:
• Adam, Bipin and Chen together scored 200 marks.
• Bipin, Chen and Dana together scored 215 marks.
• Chen, Dana and Erica together scored 224 marks.
• The two girls (Dana and Erica) scored more than Chen.
• The five of them together scored 350 marks and each of them scored
a whole number of marks.
What were their individual scores?​

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

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

Finding tbe values of the variables in each kite