If the following number is a composite number, write it as a product of prime factors. Otherwise, identify it as prime.223
A. Prime
B. 111 ? 223
C. 223 ? 1
D. 112 ? 2
Answer: A
Mathematics
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For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (4t2 - 7t)i + (t + 6)j + k ; t0 = 2
A. x = 9t, y = t, z = t B. x = 2 + t, y = t, z = t C. x = 2 + 9t, y = 8 + t, z = 1 D. x = 2 + 9t, y = 8 + t, z = 0
Mathematics
Find the product.(7x - 11y)2
A. 7x2 + 121y2 B. 49x2 - 154xy + 121y2 C. 7x2 - 154xy + 121y2 D. 49x2 + 121y2
Mathematics
Use identities to write the expression as a single function of x or ?.tan (x - 360°)
A. 
B. 
C. -tan x
D. tan x
Mathematics
Factor by grouping.24x2 - 30x + 20x - 25
A. (6x - 5)(4x + 5) B. (24x - 5)(x + 5) C. (24x + 5)(x - 5) D. (6x + 5)(4x - 5)
Mathematics