Use the commutative property of multiplication to write an equivalent algebraic expression.5 ? x
A. 5x
B. x + 5
C. 
D. x ? 5
Answer: D
Mathematics
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Use the quadratic formula to solve the equation.x2 - 28x + 196 = 0
A. {-14, 14} B. {-14} C. {14} D. {-14 - i, -14 + i}
Mathematics
Find all degree solutions to the equation.
?
?
A. 20° + 90°k, 50° + 90°k B. 50° + 90°k, 65° + 90°k C. 20° + 90°k, 70° + 90°k D. 40° + 90°k, 50° + 90°k E. 40° + 90°k, 70° + 90°k
Mathematics
Solve the system of equations.x -y + 3z = -72x+ z = -4x + 4y +z = -24
A. (-4, 0, -5) B. (-5, 0, -4) C. (0, -5, -4) D. (-4, -5, 0)
Mathematics
Find the mean. If necessary, round to one decimal place.1, 16, 15, 3, 1, 10, 10, 16
A. 17 B. 10.3 C. 8 D. 9
Mathematics