Solve the problem.Suppose a charitable organization decides to raise money by raffling a trip worth $500. If 3,000 tickets are sold at $1.00 each, find the expected net winnings for a person who buys 1 ticket.
A. -$0.85
B. -$0.81
C. -$1.00
D. -$0.83
Answer: D
Mathematics
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Find the intersection.9x + 8y - 9z = -3, -7x - 5y + 7z = 10
A. x = 11t + 65, y = 0t + 69, z = -11t
B. x = 121t + 65, y = 0t - 69, z = -11t
C. x = -11t - 65, y = 0t + 69, z = -11t
D. x = 11t - 
, y = 0t + 
, z = 11t
Mathematics
Solve for the specified variable.H = 
(a + 2b); for b
A. b = 
B. b = 
C. b = 
D. b = 3H - 7a - 14
Mathematics
Use the formula d = rt to find the value of the missing variable.d = 198 miles, t = 3 days
A. r = 66 mi/day B. r = 195 mi/day C. r = 63 mi/day D. r = 71 mi/day
Mathematics
In a batch of 13 tires, 3 are known to be defective. If 4 tires are chosen at random, find the probability that all 4 tires are good. ? Please enter your answer as a fraction.
What will be an ideal response?
Mathematics