Complete the identity.
- 1 = ?
A. 0
B. 1 - sin ?
C. 1
D. -sec2 ?
Answer: A
Mathematics
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Find the second derivative.y = 
- 9
A. 19x
B. 
x2
C. 
x
D. 19x - 9
Mathematics
Determine whether the collection is well-defined.The collection of people who wear expensive clothes.
A. Not well-defined B. Well-defined
Mathematics
Solve the equation. Round the solution to the nearest tenth.0.814s = -4.257s + 4.94s - 5.917
A. 6 B. -45.2 C. -0.8 D. 0
Mathematics
Find the amount of each payment needed to accumulate the indicated amount in a sinking fund. Round to the nearest cent.
$9,100, money earns 8% compounded semiannually, 5 years
A. $1,551.19 B. $859.86 C. $757.94 D. $1,680.13
Mathematics