Solve.2x2 + y2 = 173x2 - 2y2 = -6
A. (2, -3) and (-2, 3)
B. (2, 3), (2, -3), (-2, 3), (-2, -3)
C. (1, 3) and (-1, -3)
D. (1, 3), (1, -3), (-1, 3), (-1, -3)
Answer: B
Mathematics
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Use the quadratic formula to find the exact solutions.x2 = 15 + 9x
A. 
B. 9 ± 
i
C. 9, 15
D. 
± 
i
Mathematics
Simplify the expression.
A. 
B. 
C. a - 2b + 1
D. a - b
Mathematics
Provide an appropriate response.Suppose X is normally distributed with mean 80 and standard deviation 15. Without using tables, determine the approximate value of P(65 < X < 95).
A. 0.997
B. 0.33
C.
| 0.68 |
D. 0.95
E. 0.50
Mathematics
Solve the formula for the specified variable.P = 2L + 2W
for L
A. L = 
B. L = P - 2W
C. L = P - W
D. L = 
Mathematics