What is the value of x

x=54∘

Step-by-step explanation:

∙ the diagonals bisect the angles

∙ the diagonals bisect each other at right angles

∙ opposite sides are parallel

BD is a diagonal and bisects ∠ADC

⇒∠ADB=∠CDB=x

⇒∠ADB=∠CDB=x → alternate angles

the sum of the angles in the lower triangle = 180 ∘

⇒ 36∘ + 90∘ + x = 180∘

⇒ x=180 - 36 - 90 = 54∘

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

step-by-step explanation: