Identifying Types of Lines in Three Dimensions Planes M and N intersect at line d. 3 lines are shown. Line b is on plane M and is vertical. It forms a right angle with line d. Line a on plane M and is diagonal and goes down and to the right through line d. Line c is on plane N and goes down and to the left.

Which are lines that will intersect?

Which are perpendicular lines?

Which are skew lines?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

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

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62