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Need help please I cant find the answer

Need help please I cant find the answer-example-1
User JRunner
by
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2 Answers

22 votes
22 votes

Answers:

question one: 6

question two: 1/3

==========================================

Step-by-step explanation:

The side 12 from triangle A corresponds to the side 4 from triangle B.

The scale factor is A/B = 4/12 = 1/3 which tells us that sides in triangle B are 1/3 as long compared to sides in triangle A. This takes care of the second question.

We'll use this scale factor to determine the missing side of triangle B.

The side 18 in triangle A corresponds to this missing side in triangle B.

Take 1/3 of 18 to get (1/3)*18 = 6 which is that missing side.

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Another way to look at it: Take any side of triangle B, triple it, and you'll get a corresponding side of triangle A.

Example: The jump from 5 to 15 is "times 3".

User Tony Clifton
by
3.1k points
19 votes
19 votes

Answer:

6

1/3

Step-by-step explanation:

Similar triangles

The corresponding side on triangle A is 18 units

18 * 1/3 = 6

The side length of the missing side on B is 6 units

Side B 5

------ = ----------- = 1/3

Side A 15

The ratio is 1/3

User Francs
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2.5k points