Answer quick

the diagram shows a quadrilateral abcd.
ae is parallel to bc.
ef is the angle bisector of angle aed.

y = 25

Step-by-step explanation:

Since AE and BC are parallel, then

∠AED = ∠BCE = 110° ( corresponding angles )

Since EF is the angle bisector of ∠AED, then

∠AEF = ∠FED = 55°

∠AFE and ∠DFE form a straight angle, thus

∠AFE = 180° - 80° = 100°

The sum of the angles in ΔAEF = 180°, thus

y = 180 - (55 + 100) = 180 - 155 = 25

15.5

step-by-step explanation:

5

∑

n = 1

substitute n = 1, 2, 3, 4, 5 and sum the terms

= + + + 2² + 2³

= 0.5 + 1 + 2 + 4 + 8

= 15.5

(2,9)

i think thats the answer i checked it on google