You don't have to solve both but, if you don't attempt to solve it i'm going report yo account

6. 13

7. approx 15.81

Step-by-step explanation:

GIVE THE OTHER PERSON BRAINLIST PLEASE

Step-by-step explanation:

Δ ABC is an isosceles triangle in which the two base angles are equal.  A such 3x = 75°.

Now, since the sum of the angles in a triangle is 180°,
 then (4y + 10)° + 75° + 3x = (4y + 10 + 75 + 75)° = 180°
⇒   (4y + 10 + 75 + 75)° = 180°
                           4y = 180° - 160°
                             y = 5°