Solve the problem.A jet plane traveling at a constant speed goes 1200 miles with the wind, then turns around and travels for 1000 miles against the wind. If the speed of the wind is 50 mph and the total flight took 4 hours, find the speed of the plane.
A. 605 mph
B. 550 mph
C. 435 mph
D. 525 mph
Answer: B
Mathematics
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 2i + 2j - k, v = -i + k
A. 9; 
i - 
j + 
k
B. 3; 
i - 
j + 
k
C. 9; 
i + 
j - 
k
D. 3; 
i + 
j - 
k
Mathematics
Write a negation of the statement. Not all people like football.
A. All people do not like football. B. Some people like football. C. All people like football. D. Some people do not like football.
Mathematics
Solve for the variable.x - 
= 
A. 
B. 
C. 1
D. 
Mathematics
Simplify the algebraic expression by collecting and combining like terms.10(10y2 + 9) - (4y2 - 6)
A. 96y2 + 96 B. -96y2 + 84 C. 104y2 + 15 D. 104y2 + 3
Mathematics