Four areas are newly designated as parks as shown below. Hiking trails are to be constructed so that each park is directly connected with each of the others. What is the least number of trails needed?
An isosceles trapezoid.
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Find 
for the given function.y = 
4
A. - 
3
B. 12 
2
C. - 
2 + 
3
D. 
2 + 
3
Find the divergence of the field F.F = 
A. 
B. 
C. 0
D. 
Identify the multiplication model that best fits the problem. Do not solve the problem.Suppose there are 2 roads connecting town A to town B and 3 roads connecting town B to town C. In how many ways can a person travel from A to C via B?
A. Measurement model B. Cartesian product model C. Set model D. Array model
Solve.The inequality |x - 21.6| ? 0.4 describes the range of acceptable lengths x, in centimeters, of a certain metal rod used in a manufacturing process. Solve the inequality and interpret the solution.
A. 
; the length of the metal rod is acceptable between a low of 22 cm and a high of 22.4 cm.
B. 
; the length of the metal rod is acceptable between a low of 21.2 cm and a high of 22 cm.
C. (-?, 
? 
?); the length of the metal rod is acceptable at or below 21.2 cm and at or above 22 cm.
D. (-?, 
? 
?); the length of the metal rod is acceptable at or below 22 cm and at or above 22.4 cm.