Solve the problem.A musician plans to perform 5 pieces for a concert. If he can choose from 9 different pieces, how many different ways can he arrange his program?
A. 45
B. 126
C. 59,049
D. 15,120
Answer: D
Mathematics
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Write a matrix equation equivalent to the system of equations.-2x + 4z = 16 9y + 7z = 538x + 6y + 2z = 38
A. 
=
B.
  =  |
C.
=
D.
= 
Mathematics
Write the equation of a sine or cosine function that describes the path of the given curve.
A. y = 4 sin 
B. y = -4 sin (6?x)
C. y = -4 sin (3?x)
D. y = -4 sin 
Mathematics
Solve the equation. Identify the equation as an identity, an inconsistent equation, or a conditional equation.
= 
A. Conditional, {-6}
B. Inconsistent, ?
C. Conditional, {
}
D. Identity, {x
}
Mathematics
Solve the problem.Find 16% of $142,000.
A. $227 B. $2272 C. $8875 D. $22,720
Mathematics