Answer:
the answer u wrote is correct because the question says to just subtract x number of dog by 7 dogs and u get a total of 35 dogs
The value of x is 10
Step-by-step explanation:
We know that the sum of internal angles of a quadrilateral is 360 degrees
So,
Given
Angle 1 = A1 = 3x+10
Angle 2 = A2 = 9x+50
Angle 3 = A3 = 4x
Angle 4 = A4 = 13x+10
So,

Subtracting 70 from both sides

Dividing both sides by 29

Hence,
The value of x is 10
Keywords: Angles, Quadrilateral
Learn more about angles at:
#LearnwithBrainly
Answer:
LMF AO, I would love to help you but there is no answer choices....LOL
~QueenSupreme aka Black-Rose♥