Solve the equation.3x - 7 + 7x - 1 = 6x + 4x - 11
A. 0
B. 224
C. all real numbers
D. no solution
Answer: D
Mathematics
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Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: cylinder x2 + z2 = 49 bounded by y = 0 and y = 10Density: constant
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. Round your answer to two decimal places.Scores on a test are normally distributed with a mean of 78 and a standard deviation of 6. What is the standard score for an exam score of 73 ?
A. -0.86 B. -1.2 C. 0.86 D. -0.83
Mathematics
Factor out the GCF from the polynomial.54x9y9+ 18x3y5 + 27x5y2
A. 9(6x9y9 + 2x3y5 + 3x5y2) B. 9x3y2(6x6y7 + 2y3 + 3x2) C. x3y2(54x6y7 + 18y3 + 27x2) D. 9x3(6x6y9 + 2y5 + 3x2y2)
Mathematics
Evaluate the expression.
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?
A. 
B. 
C. 
D. 
E. ?
Mathematics