Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-3
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve for the unknown number.72 ÷ z = 24
A. 4 B. 1 C. 3 D. 30
Mathematics
Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form. 6x + 7y = 24-2x - 5y = -8
A. (3, 1) B. No solution C. (4, 1) D. (4, 0)
Mathematics
Write the expression with positive exponents, and simplify if possible.(-2)-4
A. 16
B. - 
C. -16
D. 
Mathematics
Find the standard form of the equation of the ellipse satisfying the given conditions.Center at (0, 0); Focus at (4, 0); Vertex at (-6, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics