Use the data set {d1, d2, d3, ..., d256} consisting of 256 numbers to answer the following question(s).After sorting the data set (in increasing order from left to right), the 10th percentile is the number
A. the number in the 26th position.
B. the average of the numbers in the 25th and 26th positions.
C. the number in the 25th position.
D. the number in the 10th position.
E. none of these
Answer: A
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Determine whether f(x) could represent a linear function. If it could, write f(x) in the form f(x) = mx + b.
A. No B. Yes; f(x) = 5x + 4
Answer the following statement(s) true (T) or false (F)
Student preconceptions are formed through both in-school and out-of-school experiences.
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = 2i + 3j,
w = -2i + j
A. v1 = + 
i - 
j, v2 = 
i + 
j
B. v1 = + 
i - 
j, v2 = 
i + 
j
C. v1 = + 
i - 
j, v2 = 
i + 
j
D. v1 = + 
i - 
j, v2 = - 
i + 
j
Factor the difference of squares.5x2 - 245
A. 5(x - 7)(x + 7) B. 5(x + 7)2 C. (5x - 7)(5x + 7) D. 5(x2 - 7)(x2 + 7)