Use a proportion to solve the problem. Round to the nearest tenth as needed.A building casts a shadow 18 m long. At the same time, the shadow cast by a 44-cm tall pole is 95 cm long. Find the height of the building.
A. 37.4 m
B. 6.8 m
C. 8.3 m
D. 38.9 m
Answer: C
Mathematics
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the velocity vector.r(t) = (cot t)i + (csc t)j
A. v = (-csc2 t)i - (cot t csc t)j B. v = (csc2 t)i + (cot t csc t)j C. v = (sec2 t)i + (tan t sec t)j D. v = (-sec2 t)i - (tan t sec t)j
Mathematics
Use the graph of the rational function f(x) to complete the statement.As x?3+, f(x)? 
. 
A. 0 B. +? C. 3 D. -?
Mathematics
Use the elimination method by addition to find the solution for the following system.
A. x = 2, y = 24, z = -25 B. x = -4, y = 5, z = 11 C. x = 4, y = 5, z = -5 D. The system is inconsistent.
Mathematics
Decide whether the ordered pair is a solution of the system.(-6, -5)y - 2x = 4x + y = -4
A. Yes B. No
Mathematics