Simplify the expression.
? 
A. y + 7
B. 
C. 
D. 
Answer: B
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Provide an appropriate response.
A connecting rod 28 cm long joins a crank 18 cm long to form a triangle with a third, imaginary line. If the crank and the imaginary line form an angle of 145°, find the angle formed by the connecting rod and the imaginary line. 
A. 2.5° B. 17.5° C. 13.4° D. 21.6°
Determine if the two lines are parallel, perpendicular, coinciding, or only intersecting.5x - 25y = 20y = 
x - 
A. parallel B. perpendicular C. intersecting D. coinciding
Determine if a pair of triangles is similar in each case. If they are, write an appropriate similarity sentence and explain why the triangles are similar.
a. 
b. 
Factor the trinomial.36 - 13x + x2
A. (x - 4)(x - 9) B. (x - 4)(x + 9) C. (x - 36)(x - 1) D. (x + 4)(x + 9)