Question

Only question no 22
Please help me

Answer 1

Answer:

Step-by-step explanation:

∠POR + ∠QOR = 180°   [Straight line]

4y+2 + 5y-20 = 180

9y = 198

y = 22

There ∠POR = ∠SOQ = (4*22 + 2) = 90

         ∠POS = ∠QOR  = (5*22-20) = 90

         

Answer 2

Answer:

all angles are measuring 90°

Step-by-step explanation:

(4y + 2) + ( 5y - 20 ) = 180

As they are angles on a straight line

Now we solve this equation

4y + 2 + 5y - 20 = 180

9y = 180 + 18

9y = 198

y = 198 ÷ 9 = 22

So now we put y's value in the equations

5×22 - 20 = 90°

4 × 22 + 2 = 90°

Now all angles around a point = 360°

And as vertically opposite angles are equal

Angles POS and angle QOS is also both 90°.

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