Robert went to four different pet stores and found these prices for the dry food his dog eats pet snake 20 pounds for 21 best pet 15 pounds for $40.70 i'll pay 25 pounds for $27.25 pet +19 pounds for $21.85 which store charges a lease amounth robert went to four different pet stores and found these prices for the dry food his dog eats pet snake 20 pounds for 21 best pet 15 pounds for $40.70 i'll pay 25 pounds for $27.25 pet +19 pounds for $21.85 which store charges a lease amount per pound

Adding and subtracting matricesfind the value of each variable. x = and y = would

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 must be true in order for the relationship △zyv ~ △xwv to be correct? zy ∥ wx ∠z ≅ ∠y and ∠w ≅ ∠x zv ≅ vy and wv ≅ vx ∠z ≅ ∠x and ∠w ≅ ∠y