Solve the problem.The diagram shows the roads connecting four cities.WX
YZ How many ways are there to travel between cities Y and Z by passing through exactly two cities? (Hint: Write a matrix, A, to represent the number of routes between each pair of cities without passing through another city. Then calculate A2 and A3).
A. 14
B. 15
C. 11
D. 13
Answer: A
Mathematics
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Find the standard deviation. Round to one more place than the data.17, 12, 10, 13, 5, 17, 7, 6, 9
A. 4.4 B. 1.3 C. 4.2 D. 4.8
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Convert to a percent.
A. 90% B. 95% C. 80% D. 100%
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Use sum-to-product identities to rewrite the expression as a product.cos 
- cos 
A. 2 sin 
cos 
B. 2 sin 
sin 
C. -2 sin 
sin 
D. -2 cos 
cos 
Mathematics
Complete.90 in. = 
yd
A. 7
B. 2
C. 270
D. 30
Mathematics