Rotate the axes so that the new equation contains no xy-term. Graph the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. 
B. 
Answer: A
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Solve the problem.A rectangular swimming pool is being constructed, 18 feet long and 100 feet wide. The depth of the pool is measured at 3-foot intervals across the length of the pool. Estimate the volume of water in the pool using the Trapezoidal Rule.
A. 14,400 ft3 B. 8,200 ft3 C. 12,300 ft3 D. 10,900 ft3
Solve the system of equations by graphing.2x + 3y = 253x - 2y = 18
A. (8, 3) B. (25, 18) C. (3, 8) D. (2, 12)
A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.A = ?r2; r = 3, ? = 3.14
A. A = 29.58 B. A = 28.26 C. A = 9.42 D. A = 6.14
If points A and B are the endpoints of a diameter and C is any other point on 
, find the measure 
.
A. 75° B. 85° C. 95° D. None of These