Use a calculator to find the following. Round the answer to four places past the decimal point.
?
cos 81.4°
Fill in the blank(s) with the appropriate word(s).
0.1495
Mathematics
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The graph of the following curve is given. Find the area that it encloses.
 FIGURE 1.png)
Mathematics
Solve the formula for the indicated variable.r = 
for S
A. S = 4?r2
B. S = 4?r
C. S = 16?2r2
D. S = 
Mathematics
Solve the inequality, and graph the solution set.(b + 7)(b + 4)(b + 1) < 0
A. (-1, ?)
B. (-?, -7) ? (-4, -1)
C. (-7, -4) ? (-1, ?)
D. (-?, -4)
Mathematics
Use the quadratic formula to solve the equation. (All solutions are real numbers.)
= 
+ 
A. 
B. {-1}
C. 
D. 
Mathematics