Question

9. In the given figure, find the value of ∠ABC.

A



(2 X2 + 1)

(3X2 + 1 + 2X) (3X + 6)

D B C

OR

In a parallelogram ABCD, if AB = y + 1, CD = 2 x + 5, AD = y + 5 and BC = 3x – 4. ​

Answer 1

Answer:

In parallelogram, opposite sides are parallel and equal

∴AB=CD and AD=BC

⇒2x+5=y+1⟶1

⇒3x−4=y+5⟶2

Equation 2-equation 1

(3x−2x)−4−5=0+4

x=13

Put value of x in 1

2(13)+5−1=y

y=30

BC

AB

​  

=  

3x−4

2x+5

​  

=  

3(13)−4

2(13)+5

​  

 

BC

AB

​  

=  

35

31

​  

 

∴AB:BC=31:35

Step-by-step explanation:

hope it helps you