2 sides of a triangle are congruent. The base length is unknown. The top angle is 40 degrees and the bottom left angle is x degrees. What is the value of x? I need help with this as soon as possible. Thank you so much! :)

EDIT: I got it!!

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Which graph shows the solution to the system of linear inequalities? y-4t< 4 y

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units