Use counting rules to determine the probability.A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the probability that the proposal wins by a vote of 7 to 2?
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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The figures are similar. Find the length of the side marked x.
A. 24.5 B. 40 C. 14.4 D. 22.5
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Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2
Mathematics
Find the vertex of the parabola.(y + 4)2 = 12(x + 1)
A. (1, 4) B. (-1, -4) C. (-4, -1) D. (4, 1)
Mathematics
Do the operation and express the answer in a + bi form.
A) - 19 i B) - 19 C) - 190 i D) 19 E) 19 i
Mathematics