The problem that follows refers to triangle ABC.
?
If 
and 
cm, find a.
?
Apply the rules regarding the use of significant digits.
?
A. 23 cm
B. ?24 cm
C. 19? cm
D. 18? cm
E. 20? cm
Answer: E
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Simplify the expression.
A. 3z - 5 B. 3z - 40 C. 3z + 5 D. 24z - 5
Solve.log1/981 = x
A. -2
B. 2
C. - 
D. 
Use a calculator to solve the equation on the interval [0, 2?). Round the answer to two decimal places.cos x = -0.70
A. 0.80, 3.94 B. 2.35, 3.94 C. 2.35, 5.49 D. 0.80, 2.34
Explain how to obtain the graph of the second function from the graph of the first function, or state that the graphs are identical.y = sin x, y = -sin (x + 2?)
A. The graphs are identical. B. Translate the graph 2? units to the left, and then reflect it over the y-axis. C. Translate the graph 2? units to the right, and then reflect it over the y-axis. D. Translate the graph 2? units to the left, and then reflect it over the x-axis.