Solve the equation and check your solution.-4.6 = 23 - x
A. 27.6
B. 18.4
C. 17.9
D. 27.1
Answer: A
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Find the probability of the event.A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue when one marble is drawn from the bag?
A. 
B. 
C. 
D. 8
Solve the problem.Three trains - one eastbound, one westbound, and one northbound - leave a city at the same time. The speed of the northbound train is 10 miles per hour greater than the speed of the eastbound train. After 8 hours, the distance between the westbound train and the eastbound train is 560 miles. Twice the speed of the westbound train is 40 miles per hour more than the speed of the northbound train. Find the speeds of the three trains.
A. eastbound, 30 mph; westbound, 40 mph; northbound, 40 mph B. eastbound, 20 mph; westbound, 50 mph; northbound, 40 mph C. eastbound, 40 mph; westbound, 40 mph; northbound, 30 mph D. eastbound, 40 mph; westbound, 40 mph; northbound, 50 mph
Provide an appropriate response.Find 
and 
where f(x, y, z) = 
.
What will be an ideal response?
Use mathematical induction to prove that the statement is true for every positive integer n.2 ? 4 + 3 ? 5 + 4 ? 6 + ... + (n + 1)(n + 3) = 
What will be an ideal response?