Question

please solve........ ...... with meathod​

Answer 1

Answer:

a. 5t-7=3t+1

5t-3t=7+1

2t=8

so value of t= 4

b. the length of CD=5t-7

=5×4-7

=20-7

SO 13 will be the length of CD

Answer 2

In fig.
AB=CD(opp. sides of a ||gm are equal)
=>3t+1 = 5t-7
=>8 = 2t
=>t = 4 ((a) done)
CD= 5x4-7
CD= 13cm ((b) done)
Angle y =38°