Sketch the vector field in the plane along with its horizontal and vertical components at a representative assortment of points on the circle x2 + y2 = 4.F = 
i + 
j
What will be an ideal response?
Answers will vary.
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A container contains a large unspecified number of ping-pong balls. A student takes 80 balls from the container, marks them with a blue dot, returns the marked balls to the container, and thoroughly mixes the balls. She then takes 80 balls again from the container. Of these, 16 have blue dots. She now wants to use this data to estimate the total number of ping-pong balls in the container.The statistical method described in this example is called
A. capture-recapture. B. a controlled study. C. a census. D. a survey. E. none of these
Solve the absolute-value inequality.|7k + 4| + 5 < 7
A. ?
B. 
, or 
C. 
, or 
? 
D. 
, or 
Round the whole number to the given place.7143 to the nearest thousand
A. 7000 B. 7100 C. 8000 D. 6900
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = -log4x B. y = log4x C. y = log4(-x) D. y = 1 - log4x