Find the perimeter.
A. 8.4 m
B. 7.2 m
C. 13.2 m
D. 14.4 m
Answer: D
Mathematics
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Solve the problem.Use the exact value cos 72° = 
and identities to find the exact value of sin 72°.
A. 
B. 
C. 
D. 
Mathematics
Solve.(b + 4)(b + 1)(b - 5) < 0
A. (5, ?), or {b
b > 5}
B. (-4, -1) ? (5, ?), or {a
-4 < b < -1 or b > 5}
C. (-?, -1), or {b
b < -1}
D. (-?, -4) ? (-1, 5), or {b
b < -4 or -1 < b < 5}
Mathematics
Solve: y?? + 3y? ?10y = 0 .
What will be an ideal response?
Mathematics
Evaluate the function f(x) = 2[[x]] + 7 for x = -7. ?
A. ? f(x) = -21 B. ? f(x) = 2 C. ? f(x) = -2 D. ? f(x) = -7 E. ? f(x) = 7
Mathematics