Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes
B. Yes; no
C. No
Answer: C
Mathematics
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To find an x-intercept of a graph, let 
= 0.
A. x-intercept B. x C. y-intercept D. y
Mathematics
Find the vertices of the hyperbola.16x2 - 25y2 + 128x - 150y - 369 = 0
A. (-4, 1) and (-4, -7) B. (-9, -3) and (1, -3) C. (4, 7) and (4, -1) D. (-1, 3) and (9, 3)
Mathematics
Describe the transformation required to obtain the graph of the given function from the basic trigonometric graph.y = 10 tan x
A. Vertical stretch by a factor of 10 B. Horizontal stretch by a factor of 10 C. Vertical translation down 10 units D. Vertical translation up 10 units
Mathematics
Using any method to solve the system of linear equations, find (x, y).
a. (1, –2)
b. (1, 2)
c. (–2, 1)
d. (2, 1)
Mathematics