Solve the problem.An experienced accountant can balance the books twice as fast as a new accountant. Working together it takes the accountants 12 hours. How long would it take the experienced accountant working alone?
A. 24 hr
B. 6 hr
C. 30 hr
D. 18 hr
Answer: D
Mathematics
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Write a chain rule formula for the following derivative.
for z = f(r, s); r = g(t), s = h(t)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
D. 
= 
+ 
Mathematics
Solve the equation involving fractions.
+ 
= 
A. 4, 5 B. 3, 6 C. -3, -6 D. 2, 7
Mathematics
Solve the equation.3(x + 3) + 11 = 5(x + 1) + 13
A. {1} B. {8} C. {13} D. {3}
Mathematics
Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics