Combine like terms whenever possible. Write the result with descending powers.15a6 - 15a6 + 7a5 + 15a6 - 11a5
A. 15a6 - 4a5
B. 11a11
C. 11a6
D. Cannot be simplified
Answer: A
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A. u = 
B. u = 
C. u = 
D. u = 
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A. 
B. 
C. 
D. 
Use a compass and straight edge to bisect ?A
Find the measure of the indicated angle.Two angles of a triangle are 20° and 20°. Find the third angle.
A. 40° B. 320° C. 140° D. 230°