Use Euler's formula to answer the question.A polyhedron has 34 edges and 15 faces. How many vertices does it have?
A. 49
B. 21
C. 47
D. 18
Answer: B
Mathematics
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Rationalize the denominator. 
A. 8x
B. 
C. 
D. 
Mathematics
Identify the correspondence.The two triangles shown below are congruent. List the vertices corresponding to A, B ,and C in order. 
A. X, Y and Z B. Y,X and Z C. Z, X and Y D. Y, Z and X
Mathematics
Write an algebraic expression for the quantity. Let x represent the unknown value.Five divided by a number.
A. 5x
B. 5 - x
C. 
D. 
Mathematics
Use formulas or numerical integration with a graphing calculator or computer to evaluate the given definite integral. Round answer to three decimal places.
?
?
A. 1.905 B. 2.858 C. 4.858 D. 8.001 E. 9.716
Mathematics