Solve the problem. Round your answer to the nearest tenth, if necessary.A jet plane traveling at a constant speed goes 1200 mi with the wind, then turns around and travels for 1000 mi against the wind. If the speed of the wind is a constant 50 mph, and the total flight took 4 hours, find the speed of the plane.
A. 605 mph
B. 550 mph
C. 525 mph
D. 435 mph
Answer: B
Mathematics
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Use technology to calculate det A.A = 
A. -749 B. 20 C. 31 D. -5
Mathematics
Solve the problem. Round to the nearest tenth, if necessary.A long-distance runner runs 3 miles directly south and then faces due east and runs another 7 miles. How far is the runner, in a straight line, from his starting point? 
A. 29 mi B. 3.8 mi C. 5 mi D. 7.6 mi
Mathematics
Find the optimum strategies for player A and player B in the game. 
A. A: 1: 8/15, 2: 7/15 B: 1: 2/3, 2: 1/3 B. A: 1: 7/15, 2: 8/15 B: 1: 1/3, 2: 2/3 C. A: 1: 11/15, 2: 4/15 B: 1: 2/3, 2: 1/3 D. A: 1: 2/3, 2: 1/3 B: 1: 8/15, 2: 7/15
Mathematics
Which of the first three prime numbers - 2, 3 and 5 - are factors of the following?1495
A. 2, 3, 5 B. 5 C. 3, 5 D. 2, 5
Mathematics