Mathematics, 10.07.2019 09:00 timithythaxton
The area of a rectangular glass slab is 80 square centimeters and its perimeter is 36 centimeters. if the length and width of the frame are multiplied by 4, what will be the perimeter of the new frame? select one: a. 144 cm b. 141 cm c. 99 cm d. 124 cm
Answers: 1
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
Mathematics, 21.06.2019 20:10
Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52
Answers: 2
Mathematics, 21.06.2019 22:00
In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.
Answers: 3
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