Find the midpoint of the segment with the given endpoints.(8, 1) and (9, 5)
A. 
B. 
C. 
D. 
Answer: C
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Find the center and radius of the circle whose graph is shown. Write the standard form of the equation of the circle.
A. r = 2; (h, k) = (-4, -2); (x - 4)2 + (y - 2)2 = 4
B. r = 
; (h, k) = (-4, -2); (x + 4)2 + (y + 2)2 = 2
C. r = 
; (h, k) = (-4, -2); (x - 4)2 + (y - 2)2 = 2
D. r = 2; (h, k) = (-4, -2); (x + 4)2 + (y + 2)2 = 4
Solve.In a biology class, the following test scores were recorded for a student: 85, 77, 73, 73, 85, 87. Find the mean, median, and mode for the data.
A. mean: 81, median: 80, mode: 85 B. mean: 81, median: 81, mode: 73 C. mean: 80, median: 81, mode: 73 and 85 D. mean: 80, median: 73, mode: 87
Write out the sum.
A. 52 + 53 + 54 + ... + 5n B. 5 + 52 + 53 + ... + 5n C. 5 + 52 + 53 + ... + 5n+1 D. 52 + 53 + 54 + ... + 5n+1
The area of the region that lies to the right of the y-axis and to the left of the parabola x = 2y ? 
(the shaded region in the figure) is given by the integral 
Find the area..
Select the correct answer.
a. 175/6
b. 4
c. 9
d. 4/3
e. 6