Solve.y2 - x2 = 1x - 3 = y
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the product using one of the formulas for the square of a binomial.(y + 0.8)2
A. 2y + 1.6 B. y2 + 1.6y + 0.64 C. y2 + 0.64y + 0.64 D. y2 + 0.64
Mathematics
A set of data items is normally distributed with a mean of 60. Determine the z-score for the data point given, if the standard deviation is as given.data item: 60; standard deviation: 9
A. 1
B. 9
C. 
D. 0
Mathematics
Perform the indicated operation.-15 ? (-15)
A. 225 B. -240 C. 240 D. -225
Mathematics
Use the unit circle to determine the value of the given expression or state that it is undefined.sec (-90°)
A. 0 B. -1 C. undefined D. 1
Mathematics