Can someone me with the problems in the images

the first one is 5. 5 and second is 5

Step-by-step explanation:

sorry i couldnt do the others

Step-by-step explanation:

6) In rectangle, diagonals are equal.

KM = LN

6x + 16 = 49

6x = 49 - 16

6x = 33

x = 33/6

x = 5.5

7) 2x + 4 =  5x - 11

2x - 5x = -11 -4

-3x = -15

x = -15/-3

x = 5

In  rhombus,diagonals make two congruent triangles

So, ∠ACD = ∠ACB

8) In Rectangle, diagonals are equal and bisect each other

x + 10 = 3x - 18

x - 3x =  -18 -10

-2x = -28

x = -28/-2

x = 14

9) a + 36 = 180   { sum of co interior angles is 180}

a = 180 - 36 = 144

a = 144

113 + b = 180    { sum of co interior angles is 180}

b = 180 - 113

b = 67

10)  4th figure