Find the measure of the unknown angle in the pair of supplementary angles.Find the measure of ?s if the measure of ?t = 98°.
A. 98°
B. 2°
C. 82°
D. 278°
Answer: C
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Determine whether the system corresponding to the given augmented matrix is dependent or inconsistent. If it is dependent, give the solution.
A. dependent; (8, -4) B. dependent; (-8, 4) C. inconsistent D. dependent; (-8, 4, -9)
The scores on an economics examination are normally distributed with a mean of 62 and a standard deviation of 18. If the instructor assigns a grade of A to 10% of the class, what is the lowest score a student may have and still get an A? ? Round your answer to the nearest integer. ? __________ %
Fill in the blank(s) with the appropriate word(s).
Rationalize the denominator. Assume that all variables represent positive real numbers. 
A. 
B. 
C. 
D. 
Use the discriminant to determine if the given equation can be solved by factoring. If it can be solved by factoring, find the factors.7k2 = -7k - 2
A. Cannot be solved by factoring B. (k + 2)(k - 7) C. (k + 1)(k - 3) D. (k - 1.4)2