Identify the property illustrated here.

for all a and b: a + b = b + a
a) associative
b) commutative
c) distributive
d) identity

If the value of cos330°is√3/2 then find cos 165°.

The table shows the number of hours orlando spent at football practice last week. select the appropriate numbers below to complete the model to find the number of hours orlando spent practicing on tuesday and friday.

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.