Evaluate the expression for the given replacement values.x - y + z for x = 23, y = 7, z = 4
A. 34
B. 12
C. 21
D. 20
Answer: D
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Solve the problem.Tote boards at race tracks list the odds that a horse will lose the race. If the probability of a horse winning the race is 
, then what are the odds listed on the tote board?
A. 11 to 1 B. 9 to 1 C. 10 to 1 D. 1 to 10
Suppose that the ratio of boys born to girls born is 120 to 100, what is the probability that out of 2500 babies born in Santa Clara, 1180 will be girls? Round your answer to four decimal places. ?
A. 0.9966 B. 0.2044 C. 0.4721 D. 0.0034 E. 0.2460
Solve the equation.-2.6r = 78
A. 78 B. -52 C. 2.6 D. -30
Solve.Martha can rake the leaves in her yard in 5 hours. Her younger brother can do the job in 6 hours. How long will it take them to do the job if they work together?
A. 30 hr
B. 6 hr
C. 
hr
D. 
hr