What is the length of line segment a b? round to the nearest tenth. 19.3 in. 21.3 in. 23.5 in. 68.0 in.

10 x 12 = 120 the tens to conte like 10,20,30,40 so i did that 12 times

only 2 solutions are positive

also the part with what number should be added to both sides of the equation

should be 2 or 4

if you are looking for the answer it is 10

step-by-step explanation:

if a polygon ab c d e is transformed to congruent polygon mn o p q, then following possibilities can happen

1. rotation                 2. reflection             3. translation   4. reflection and then translation or vice versa     5. rotation and then reflection or vice versa     6. translation and rotation   or vice versa   7. all of three , rotation, then reflection and then translation or in any order.  

we will get a congruent polygon m n o p q which is congruent to a b c de.

now , polygon   m n o p q is translated 3 units right and 5 units down to get a   congruent polygon, v w x y z, so if vertices of   polygon   m n o p q is m(x,y), n(u,v), o(p,q), p(r,s) and   q(a,b)   this, then vertices of polygon, v w x y z will be ,v(x+3,y-5), w(u+3,v-5),o(p+3,q-5),p(r+3,s-5),q(a+3,b-5).