Mathematics, 12.07.2019 21:30 cathydaves
Memalik wants to have atleast $30 in his bank account so he can purchase some songs when he starts saving he has $8 he is given $7 by his aunt and then earns another $10 mowing lawns at least how much more does he need write an in equality representing this situation. solve the inequality and interpret the solution .is the solution reasonable?
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Mathematics, 21.06.2019 14:00
The table shows the distance traveled over time while traveling at a constant speed.
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Mathematics, 21.06.2019 15:30
After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30
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Mathematics, 21.06.2019 16:50
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
Answers: 1
Memalik wants to have atleast $30 in his bank account so he can purchase some songs when he starts s...
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