Marco sorted these solid figures into two groups. What is true about the groups? Group 1
Group 2
E
1.) All figures in Group 2 are triangular
prisms.
1) All figures in Group 1 are rectangular
prisms.
1) All figures in Group 2 appear to have at
least one triangular face.
>) All figures in Group 1 appear to have at
least one square face.
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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

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?