Solve the problem.A storage tank contains radium, which has a half-life of 1600 years.i) Let f(t) represent the percent of the radium that remains in the tank at t years after the element was placed in the tank. Find an equation for f.ii) Predict when 20% of the radium will remain.
What will be an ideal response?
| i) | f(t) = 100( )t/1600 or f(t) = 100(0.999567)t |
Mathematics
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Mathematics
Simplify the expression. If any variables are present, assume that they are positive.
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A. 64 B. 16 C. 128 D. 8
Mathematics
Factor by grouping.5x + 35 + xy + 7y
A. (x + 7y)(5 + y) B. (y + 7)(5x + y) C. (x + 7)(5 + y) D. (y + 7)(x + 5)
Mathematics
Use mathematical induction to prove that the statement is true for every positive integer n.9n > 9n - 1
What will be an ideal response?
Mathematics