Find the second derivative 
of the parametric equations 
, 
variablename="impvar_cb67929d67cc4ee981a0bad15" />.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Find the exact value of the expression.cos-1 (1)
A. -?
B. 
C. ?
D. 0
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Solve.Sue buys a house which has a rectangular yard measuring 11.5 meters by 7.1 meters. In one corner of the yard is a rectangular shed measuring 2.3 meters by 2.5 meters. Sue intends to grow grass in the whole of the yard. What is the area of the yard, excluding the shed?
A. 81.65 m2 B. 75.90 m2 C. 2.3 m2 D. 759.0 m2
Mathematics
Select the correct graph of the inequality.
?
?
A. ?
B. ?
C. 
D. ?
E. ?
Mathematics
Decide whether the following is an expression or an equation.10x - 1 + 6x + 6
A. Expression B. Equation
Mathematics