Establish the identity.cos
= 
cos x - 
sin x
What will be an ideal response?
cos 
= cos x cos 
- sin x sin 
= 
cos x - 
sin x.
Mathematics
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The cumulative number F of flu cases reported after t weeks is modeled by the function
.
The maximum number of people who can be expected to get the flu is (round your answer to two decimal places, if necessary)
?
A. 1,398.00 B. 2,796 C. 71.69 D. 38
Mathematics
Change the order of integration and evaluate the integral.
A. 
B. 
C. 
?
D. 
?
Mathematics
Multiply and simplify.32 ? 
A. 15
B. 12
C. 
D. 
Mathematics
Find the area of the shaded region. (Assume that given measurements are exact, and round approximate answers to the nearest tenth of a square unit.)
?
?
A. 7.1 dm2 B. 9 dm2 C. 2.25 dm2 D. 2.3 dm2 E. 28.3 dm2
Mathematics