3(-6(2 + 3) + 4) = -78 i cannot find this answer. what are the steps of this equation to equal -78 you

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Which of the following best describes the figure?

Angles 1 and 2 are complimentary angles. angle 1 = 52 degrees. what is the measure of angle 2?