Decide whether the expression is or is not an identity.
= sin x
A. Identity
B. Not an identity
Answer: B
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos 2t + 4 cos 6t, y = 5 sin 2t - 4 sin 6t, 0 ? t ? ?
A. 
B. 
C. 
D. 
Mathematics
Find the area.
a = 70 ft, b = 120 ft
A. 280 ft2 B. 8400 ft2 C. 190 ft2 D. 16,800 ft2
Mathematics
Solve the equation.-9x + 3 = 5 + 7x
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation. 
÷ 10
A. 
B. 
C. 
D. 
Mathematics