Multiply. Assume that all variables represent nonnegative real numbers.
A. y 
- y 
B. y 
- y2 
C. 
- 
D. 
- y 
Answer: A
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Use an Euler diagram to determine whether the syllogism is valid or invalid.No even number is divisible by 7.42 is an even number. ? 42 is not divisible by 7.
A. Valid B. Invalid
Solve the problem.A figure skater must trace a figure eight on the ice that consists of two perfect circles, each with a radius of 11 feet. How far does the skater go one time around the figure eight? Use 3.14 for ?. Round your answer to the nearest tenth.
A. 138.2 ft B. 32.5 ft C. 34.5 ft D. 69.1 ft
Solve for x.
= -45
A. -80 B. -8 C. -1 D. 0
Solve the problem.On part of a scenic tour of underground caves, Dave and Neil started at an elevation of 40 feet below sea level. They then rose 20 feet. Represent their distance below sea level as a signed integer.
A. 60 feet B. -60 feet C. 20 feet D. -20 feet