Solve the problem.A plane flies 400 miles with the wind and 320 miles against the wind in the same length of time. If the speed of the wind is 22 mph, what is the speed of the plane in calm air?
A. 203 mph
B. 188 mph
C. 198 mph
D. 223 mph
Answer: C
Mathematics
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= 
=
= 0.
What will be an ideal response?
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Use an Euler diagram to determine whether the syllogism is valid or invalid.Some TV shows are comedies.All comedies are hits. ? Some TV shows are hits.
A. Valid B. Invalid
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Multiply and simplify. Assume that all variables represent positive real numbers.
? 
A. 
B. 
C. 2
D. 2
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A. - 
B. 
C. 3
D. - 3
Mathematics