Mathematics, 17.11.2020 16:20 JanetQ2002
What value(s) of b will cause 4x^2+bx+25=0 to have exactly one real solution?
A. ± 20
B. 400
C. ± 200
D. 20
Answers: 2
Mathematics, 21.06.2019 13:20
Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]
Answers: 3
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 17:00
The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles
Answers: 2
Mathematics, 21.06.2019 18:10
An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years
Answers: 3
What value(s) of b will cause 4x^2+bx+25=0 to have exactly one real solution?
A. ± 20
B...
B...
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