Add or subtract as indicated.(r - 5s + 1) + (4r + s) + (s - 3)
A. 3r - 3s - 2
B. 4r - 5s - 2
C. 5r - 4s - 2
D. 5r - 3s - 2
Answer: D
Mathematics
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All references are to the figure below. The distance between A and D is a, and the distance between D and C is x. 
Assuming that A = 17°, ?BDC = 43°, and c1 = 60. find h, x, and a.
A. h ? 18, x ? 19, a ? 39 B. h ? 40, x ? 40, a ? 90 C. h ? 41, x ? 44, a ? 90. D. h ? 20, x ? 20, a ? 40
Mathematics
This follows as a Corollary to the Parallel Postulate:
(a) AAS. (b) HL. (c) HA. (d) ASA. (e) Both (a) and (c) are correct. (f) Both (b) and (d) are correct.
Mathematics
Find the domain of the function.f(x) = 8x - 2
A. {x|x > 0}, or (0, ?) B. {x|x ? 0}, or (-?, 0) ? (0, ?) C. {x|x > 2}, or (2, ?) D. all real numbers, or (-?, ?)
Mathematics
Evaluate.140 + 50
A. 1 B. 2 C. 0 D. 19
Mathematics