Missed work hours caused by one of a class of industrial accidents has a probability density function f (t) = 
e-t + 
e-t/2 + 
e-t/3 where t is measured in hours.What proportion of these accidents result in more than 9 missed work hours?Enter just a real number to two decimal places.
Fill in the blank(s) with the appropriate word(s).
.01
Mathematics
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Use a calculator to find the following to four decimal places.
A. 11.6952 B. 272.9563 C. 27.2956 D. -2.3352
Mathematics
Solve the formula for the specified variable.a + b = s + r for r
A. r = s(a + b)
B. r = 
C. r = 
+ b
D. r = a + b - s
Mathematics
Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation.x2 - 2x - 3 ? 0
A. (-?, -1]
B. [3, ?)
C. (-?, -1] ? [3, ?)
D. [-1, 3]
Mathematics
Convert the expression.
?
?
?
A. ?
B. 
C. ?
D. 
E. 
Mathematics