Consider the quadrilateral abcd. which information could be used to prove that the quadrilateral abcd is a parallelogram? a) apply the distance formula to show that diagonals ac and bd are congruent. b) apply the distance formula to show that segments ab and ad are congruent and segments cd and bc are congruent c) apply the slope formula to show that segments ab and cd are perpendicular and segments ad and bc are perpendicular. d)apply the slope formula to show that segments ab and cd have the same slope and segments ad and bc have the same slope

For all you other k12 ppl dreading this ... the answer is D

if im undersanding the question correctly, its organized from 10

step-by-step explanation:

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !