Solve the equation by factoring.x2 - x = 72
A. {-8, -9}
B. {8, 9}
C. {8, -9}
D. {-8, 9}
Answer: D
Mathematics
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Simplify.(3x5)4
A. 81x20 B. 3x9 C. 81x5 D. 81x19
Mathematics
Find fraction notation and simplify.27
%
A. 
B. 
C. 
D. 
Mathematics
Solve the equation by making an appropriate substitution.2x1/2 - 3x1/4 - 20 = 0
A. 
B. {256}
C. {-4, -5}
D. 
Mathematics
Use the table of record trout lengths at Yosemite Lake to answer the question. To find the average, add up the values you are interested in and then divide the sum by the number of values. Round your answer to the nearest tenth. 
Find the average length of record trout caught during a weekday.
A. 71.8 in. B. 13.9 in. C. 19.5 in. D. 14.4 in.
Mathematics