Solve the problem.Find ? to the nearest hundredth of a degree, where -90° ? ? ? 90°.sin ? = 0.8543
A. -58.68°
B. 40.51°
C. 58.68°
D. 148.68°
Answer: C
Mathematics
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Solve the equation by the method of your choice. Simplify irrational solutions, if possible.2x2 = 14
A. {±7}
B. {
}
C. {±
}
D. {±8}
Mathematics
Use the identities for the cosine of a sum or a difference to write the expression as a single function of ?.cos (90° - ?)
A. -sin ? B. -cos ? C. cos ? D. sin ?
Mathematics
Find the maximum or minimum value of the objective function, subject to the constraints graphed in this feasible region. 
z = x + 7y. Find maximum.
A. Maximum 30 B. Maximum 18 C. Maximum 37 D. Maximum 24
Mathematics
Complete the factoring.42x2 - 11xy - 20y2 = (7x + 4y)( )
A. x - 20xy B. 5x - 6y C. 6x - 5y D. 6x + 5y
Mathematics