Question

1) Which ratio is proportional to 18/21?
A: 1/3
B: 30/35
C: 36/48
D: 2/3
2)
Which pair of rectangles is similar?
A:http://static.k12.com/calms_media/media/1299500_1300000/1299518/1/f73ffef3e0d11161f02f317b3c390f915d0336bf/141084_C.jpg
B:http://static.k12.com/calms_media/media/1299500_1300000/1299517/1/eff933155e5b2d04f33ed6023f887599d911ea44/141084_B.jpg
C:http://static.k12.com/calms_media/media/1299500_1300000/1299519/1/9c6842082076529e8de1c8d4b6f6dda32ab9a427/141084_D.jpg
D:http://static.k12.com/calms_media/media/1299500_1300000/1299516/1/6f8b1cd825a70e80de0e0e2e94826be6a4bc2643/14

Answer 1

3)The triangles shown are similar. What is the value of x?
http://static.k12.com/calms_media/media/243500_244000/243527/1/ee3fc13b57e5da8821a49903476e3922c5bbbd78/VHS_PA_S2_01_L210_L310_Q8.gif
A.
20

B.
17

C.
5

D.
10
4)The figures shown are similar.

What is the scale factor?
http://static.k12.com/calms_media/media/1299500_1300000/1299526/1/6945cea01b7058a2b1e5e3986140c0c8a9557750/141092.jpg

Answer 2

for number 1) Its B

Answer 3

Number 2) D

Answer 4

Number 3) is A

Answer 5

@Studybird123 Thanks!!
Um, but could you explain Similarity to me, please?
Im having trouble with it...XD

Answer 6

Yeah sure! for number 3 right?

Answer 7

I go to k12 too if you want to know :)

Answer 8

Yesh please!! :D

Answer 9

XD
Coolz!!

Answer 10

Ok so you see how 12/3=4 and 16/4=4 when you are doing a problem like this always find out what number you need to use, in this case its 4. So when you multiply 5 and 4 you get 20 and there's your answer!

Answer 11

Does that make sense?

Answer 12

Um I think so.
So, I just divide, in this case, the legs, by each other right?
And then, I multiply the hypotenuse by each other?

Answer 13

Yep you just wrapped it all up! :)

Answer 14

Ok.
Yeah I got then :D
Thanks so much for your help!!

Answer 15

yep your welcome :)