A sorority has 20 members, 12 of whom are full members and 8 are pledges. Two persons are selected at random from the membership list of the sorority. Find the probability: the first person selected is a pledge.
What will be an ideal response?
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at 
and 
. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the semicircle 
to the semicircle 
.
A. 
B. 
C. 
D. 
Solve the system. Indicate all corner points and shade the solution set.x - 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
a = 3.9 cm, b = 1.2 cm, C = 90°Round values to one decimal place.
A. A = 17.1°, B = 72.9°, c = 4.1 cm B. A = 17.9°, B = 72.1°, c = 5.1 cm C. A = 68.4°, B = 21.6°, c = 4.1 cm D. A = 72.9°, B = 17.1°, c = 4.1 cm
Find all values of ? with the given trigonometric function value.sin ? = - 
A. 60° + n ? 360°; 300° + n ? 360°, n any integer B. 210° + n ? 360°; 330° + n ? 360°, n any integer C. 150° + n ? 360°; 210° + n ? 360°, n any integer D. 60° + n ? 360°; 120° + n ? 360°, n any integer