Write the rate as a unit rate.405 miles in 9 hours
A. 414 miles/hour
B. 45 miles/hour
C. 45 miles
D. 3645 miles
Answer: B
Mathematics
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Solve the problem.The lengths of human pregnancies are normally distributed with a mean of 264 days and a standard deviation of 12 days. What is the probability that a pregnancy lasts at least 300 days?
A. 0.4834 B. 0.9834 C. 0.0179 D. 0.0013
Mathematics
Solve the problem.Betty bought a $194.00 coat for 30% off the regular price. How much did she save by buying the coat on sale? Round to the nearest cent.
A. $60.20 B. $58.20 C. $61.20 D. $55.20
Mathematics
Two dice are rolled. Find the probability of the event described.The score on the dice is no more than 7.
A. 
B. 
C. 
D. 
Mathematics
Solve the linear equation.
+ 
= 
A. {0}
B. {1}
C. 
D. {10}
Mathematics