Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has less than 2 siblings?
A. 0.73
B. 0.27
C. 0.54
D. 0.19
Answer: C
Mathematics
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Write a numerical expression for the phrase and simplify it.The product of 
and 
, divided by - 
.
A. 
; - 
B. 
; - 
C. 
; - 
D. 
; - 
Mathematics
Find the difference.-15 - (-12)
A. -3 B. 3 C. 27 D. -27
Mathematics
Find the area.
All segments are of equal length
A. 144 yd2 B. 72 yd2 C. 108 yd2 D. 180 yd2
Mathematics
Find the focus and the directrix of the parabola.x = 2y2 - 8y + 7
A. Focus: 
; directrix: x = - 
B. Focus: (-1, -1); directrix: x = -3
C. Focus: 
; directrix: x = - 
D. Focus: (1, -1); directrix: x = -3
Mathematics