A hose can fill a swimming pool in 6 hours. Another hose needs 3 more hours to fill the pool than the two hoses combined. How long would it take the second hose to fill the pool?
?
A. 6 hours
B. 11 hours
C. 12 hours
D. 3 hours
E. 9 hours
Answer: A
Mathematics
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Simplify the expression. Assume that all variables are positive when they appear.
A. 4y8 B. 2y16 C. 2y8 D. 2y14
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Use Simpson's Rule with n = 4 steps to estimate the integral.
A. 
B. 
C. 
D. 
Mathematics
Simplify the algebraic expression.8.2x3 + 9.6x - 5.7x3 + 13.9 - 7.2x
A. -2.5x3 + 2.4x - 13.9 B. 2.5x3 + 16.8x + 13.9 C. 2.5x3 + 2.4x + 13.9 D. 13.9x3 + 16.8x + 13.9
Mathematics
Consider a sample of paired data which gives a linear correlation coefficient r. Use the table to determine whether there is a significant linear correlation.
?
?
?
A. yes B. no
Mathematics