20 cm
1 answer:
The area of the arrow given in the figure is 610 square cm
<h3>Area of composite figure</h3>The given figure is made up of rectangle and triangle. The area is expressed as:
Area = Area of rectangle + area of triangle
Substitute the given parameters
Area of the arrow = (15*20) + 0.5(31 * 20)
Area of the arrow = 300 + 310
Area of the arrow = 610 square cm
Hence the area of the arrow given in the figure is 610 square cm
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Answer:
92% Confidence interval: (0.7078,0.7722)
Step-by-step explanation:
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Sample size, n = 500
Number of travelers who favor tight security, x = 370
92% Confidence interval:
Putting the values, we get: