Group the objects into classes so that all the elements within each class are topologically equivalent and no elements from different classes are topologically equivalent.A. a glassB. a bowling ballC. a sheet of typing paperD. a rulerE. a sphere
A. A, B, C, D and E
B. A, B, C, and E; D
C. A, B, C, and D; E
D. A; B, C, D and E
E. A, C and E; B; D
Answer: A
Mathematics
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For what values of x does the series converge conditionally?
A. x = 0
B. x = 
C. x = - 
D. None
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Compute r, the linear coefficient of correlation, for the given data.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
A. -0.224 B. -0.678 C. 0.678 D. 0.224
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. x + 4 B. x - 4 C. x - 2 D. x + 2
Mathematics
Express the sum or difference as a product of sines and/or cosines.sin(4?) - sin(6?)
A. 2 cos(4?) cos(5?) B. -2 sin ? cos(5?) C. 2 sin(5?) cos ? D. -2 sin ?
Mathematics