Suppose 500 coins are tossed. Using the normal curve approximation to the binomial distribution, find the probability of the indicated results.More than 262 heads
A. .131
B. .142
C. .871
D. .129
Answer: A
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Solve the variation problem.The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is at 
-4.0px;" /> above the earth at a velocity of 
Use 
as the radius of the earth, and round your answer to the nearest hundredth of an hour.
A. 51.59 hours
B. 22.14 hours
C. 7.18 hours
D. 221.4 hours
Simplify the algebraic expression.6.7m + 19.1m
A. 51.6m B. 25.8m2 C. 25.8m D. 127.97m
Find the root. Assume that all variables represent nonnegative real numbers. 
A. 
B. 72x5
C. 2x5
D. 
Solve the problem.In recent years, many states have passed laws against smoking in public buildings. The total number of states N that have passed a no smoking in public buildings law, t years after 1990 is given by the function, N(t) = 
. How many states had passed the law in 1990?
A. 0 B. 0.313 C. 1.563 D. 3.125