Multiply.2x(12x - 10)
A. 12x2 - 20x
B. 4x2
C. 24x2 - 10x
D. 24x2 - 20x
Answer: D
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For the pair of similar triangles, find the length of the indicated side.
In the outer triangle, the shortest side has length 6, and the middle side has length 9. In the inner triangle, the shortest side has length 2, the middle side has length 3, and the longest side has length 4. Find the length, x, of the longest side of the outer triangle.
A. x = 4 B. x = 12 C. x = 11 D. x = 16
Decide whether or not the matrix is a probability vector. 
A. Yes B. No
The scores of students on a standardized test form a normal distribution with a mean of 300 and a standard deviation of 40. What must a student score in order to be in the upper 10%?
What will be an ideal response?
Graph the linear inequality.4x + y ? -1
A. 
B. 
C. 
D. 