Afair ordinary dice is rolled once. what is the probability of rolling a 3 or 4?

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.

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.