As President of Spirit Club, Tiana organized a "Day of Decades" fundraiser where students could pay a fixed amount to dress up as their favorite decade. Of the 8 students who participated, 6 of them dressed up as the '70s. If Tiana randomly chose 4 of the participants to take pictures of for the yearbook, what is the probability that all of them dressed up as the '70s?

How to do this , and can some one explain

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality