Find the measure of the angles.
?A = (2x + 1)°, ?B = (4x + 5)°
A. 60° and 120°
B. 55° and 125°
C. 59° and 121°
D. 68° and 112°
Answer: C
Mathematics
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Simplify the expression.2.3(5.5 - 7.1)
A. -5.55 B. 3.68 C. 5.55 D. -3.68
Mathematics
Provide an appropriate response.Find 
if 3x2 + 7xy + y2 = 19
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find an equation for the graph.
A. y = -4 cos 
B. y = -4 sin (2x)
C. y = -4 sin 
D. y = -4 cos (2x)
Mathematics
Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 + 
x
A. 
; x2 + 
x + 
= 
2
B. 144; x2 + 
x + 144 = (x +12)2
C. 
; x2 + 
x + 
= 
2
D. 
; x2 + 
x + 
= 
2
Mathematics