Find an equation of variation for the given situation.y varies jointly as x and z, and y = 135 when x = 9 and z = 3
A. y = 7xz
B. y = 15x
C. y = 5xz
D. y = 
Answer: C
Mathematics
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Solve the problem.A poker hand consists of 5 cards dealt from an ordinary deck of 52 playing cards. How many different hands are there consisting of four hearts and one spade?
A. 13 B. 9295 C. 715 D. 728
Mathematics
Find the domain of f(x).f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the formula for the specified variable.A = 
h(b1 + b2) for b1
A. b1 = 
B. b1 = 
C. b1 = 
D. b1 = 
Mathematics
Use factoring to solve the equation.(x + 4)(x - 13) = 0
A. -4, 13 B. -13, 4 C. 4, -13 D. 13, 4
Mathematics