Use an associative property to complete the statement.8 ? (xy) = 
A. 8 + (xy)
B. 8 ? (yx)
C. (8x) ? y
D. (xy) ? 8
Answer: C
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Use Heron's formula to find the area of the triangle. Round to the nearest square unit.a = 10 yards, b = 10 yards, c = 16 yards
A. 51 square yards B. 54 square yards C. 57 square yards D. 48 square yards
Find the dimension of the matrix. Tell if the matrix is a square, column, or row matrix, when applicable.
A. 3 × 1; column B. 1 C. 1 × 3; row D. 3
The quartile points for a probability density function are the values x1, x2, x3 that divide the area under the graph of the function into four equal parts. Find the quartile points for the probability density function f(x).f(x) = 
A. 
; 
; 
B. 
; 
; 
C. 
; 
; 
D. 
; 
; 
Simplify and then, if appropriate, write in radical notation. z-2/5 ? z3/5
A. 
B. 
C. 
D. 