Factor by grouping.15x2 - 6x - 25x + 10
A. (3x + 5)(5x + 2)
B. (15x + 5)(x + 2)
C. (3x - 5)(5x - 2)
D. (15x - 5)(x - 2)
Answer: C
Mathematics
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A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, an+1 = 
A. 1, 
, 
, 
, 
B. 1, 
, 
, 
, 
C. 1, 
, 
, 
, 
D. 1, 
, 
, 
, 
Mathematics
Write an equation of the line described.Through (6, 2), perpendicular to 7x - 6y = 48
A. y = - 
x - 
B. y = - 
x + 
C. y = 
x + 
D. y = 
x - 
Mathematics
Find the exact value of the expression.sin 265° cos 25° - cos 265° sin 25°
A. - 
B. 
C. 
D. - 
Mathematics
Find the magnitude of the vector and the angle 
, 
, that the vector makes with the positive x-axis.
?
?
?
A. ?
B. ?
C. 
D. ?
E. ?
Mathematics