Alexia figures out the answer to 6x9 by lowering the thumb on her right hand (shown). What is the answer? Explain alexia strategy

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Find the cosine function that is represented in the graph.

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.