Find an equation of variation in which the following are true.y varies jointly as x and z, and y = 90 when x = 3 and z = 6
A. y = 
B. y = 5xz
C. y = 30x
D. y = 7xz
Answer: B
Mathematics
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Solve the problem.Find the volume of the rectangular solid.
A. 216 yd3 B. 72 yd3 C. 24 yd3 D. 72 yd3
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
?
A. x = 
, y = - 
, z = 0, w = 
; 
B. x = 1, y = -2, z = 0, w = 3; (1, -2, 0, 3)
C. x = -1, y = - 
, z = 0, w = 
; 
D. x = 
, y = -2, z = 0, w = 
; 
Mathematics
Factor the binomial completely.384t3 - 6
A. 6(4t - 1)(16t2 + 4t + 1) B. 6(4t + 1)(16t2 - 4t + 1) C. 6(4t - 1)(16t2 - 4t + 1) D. 6(4t - 6)(16t2 + 24t + 6)
Mathematics