Solve the equation.6z + z = 42 - 7
A. 7
B. 5
C. -5
D. -7
Answer: B
Mathematics
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Find the exact value of the expression or state that it does not exist.tan-1 
A. 
B. - 
C. - 
D. 
Mathematics
Graph the piecewise linear function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Find the slope of the line. 
A. -6
B. - 
C. 
D. 6
Mathematics
You are given the shape of the vertical ends of a trough that is completely filled with water. Find the force exerted by the water on one end of the trough. (The weight density of water is 62.4 lb/ft3.) Select the correct answer.
a. 5,200 lb
b. 1,040 lb
c. 520 lb
d. 2,600 lb
Mathematics