Solve the equation using a graphing calculator. Find solutions accurate to two decimal places.3x2 - 7 = 8x
A. -0.64, 3.41
B. -0.7, 3.35
C. -0.69, 3.36
D. -0.74, 3.31
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Solve by the method of elimination by substitution.2x - 2y = -103x + 3y = 27
A. x = -2, y = 7 B. x = 2, y = 7 C. x = -7, y = -5 D. Inconsistent
Mathematics
Find a set of polar coordinates for the point for which the rectangular coordinates are given.(5, -5
)
A. 
B. 
C. 
D. 
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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