Solve the equation.(2m + 6)2 - 5(2m + 6) - 6 = 0
A. - 
, 0
B. -6, 1
C. - 6, - 
D. - 
, - 6
Answer: A
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Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
a = 3.2 cm, b = 1.9 cm
A. A = 59.3°, B = 30.7°, c = 3.7 cm B. A = 54.8°, B = 35.2°, c = 3.7 cm C. A = 30.7°, B = 59.3°, c = 3.7 cm D. A = 36.4°, B = 53.6°, c = 5.1 cm
Show that the equation is not an identity by listing the value(s) of the variable from among 0, 
, 
, and - 
for which the equation is false.sin2? = cos2?
A. 
B. - 
C. 0 and 
D. 
and - 
Write as a rate in simplest form. Express your answer as a fraction.155 miles per 15 gallons
A. 
B. 
C. 
D. 
Solve the problem.pH = -log10[H+] Find the [H+] if the pH = 3.4.
A. 3.98 × 10-4 B. 3.98 × 10-3 C. 2.51 × 10-4 D. 2.51 × 10-3