Does anyone know how to answer this question?

If square root x = -7, then x= -49 true or false

In the picture below, line pq is parallel to line rs, and the lines are cut by a transversal, line tu. the transversal is not perpendicular to the parallel lines. note: figure is not drawn to scale. which of the following are congruent angles?

Asingle die is rolled twice. find the probability of rolling a 3 the first time and a 2 the second time