Lines R and S are parallel. Find the value of x, then find the measure of 21 and 22. m21=(74 - x)º
m22 =(85 – 2x)

a) The value of  x = 11°

b) m21 =  63°

 m22= 63°

Step-by-step explanation:

Step(i):-

Given that the lines R and S are parallel

Given that M21  = (74-x)°

                  M22 = (85-2x)°

Equating angles

             (74-x)° = (85-2x)°

             74 - 85 = x -2x

               -11 = -x

                 x = 11°

Step(ii):-

Put x = 11°

⇒  m21 = ( 74 -11) ° = 63°

⇒  m22 = (85-2(11))° = (85-22)° = 63°

Final -

a) The value of  x = 11°

b) m21 =  63°

 m22= 63°

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get