Question

1) The angles of quadrilateral add up to 360 degrees three of the angels, in degrees are x,2x and 3 (x-10)
a)write down an inequality for x

Answer 1

Answer:

Step-by-step explanation:

The angle of quadrilateral=360°

The sum of four angle =x+2x+3(x-10)

x+2x+3(x-10)=360°

3x+3x-30 =360°

6x-30 =360°

6x =360°+30

6x =390°

x=390/6

x= 65°

therefore x = 65°

finally substitute the values