Determine whether the lines through each pair of points are perpendicular.(7, -1) and (21, 3); (10, 4) and (17, 6)
A. not perpendicular
B. perpendicular
Answer: A
Mathematics
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Assume that the sequence converges and find its limit.a1 = 6, an + 1 = 
A. 7 B. 6 C. 5 D. 8
Mathematics
Find the slope of the line tangent to the curve at the given value of x.f(x) = 3x2 + 12x; x = 6
A. 78 B. 48 C. 108 D. -108
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
If the area of a rectangular wall is 30 yd2 and the insulation costs $12.50 per square yard, how much will the project cost?
(a) $250 (b) $300 (c) $137.50 (d) $275
Mathematics