anonymous
  • anonymous
HELP PLEASE!To prevent a ladder from shifting, safety experts recommend that the ratio of a: b be 4 : 1. How high will a 30-foot ladder reach when placed against a wall? Round to the nearest inch. 31 ft. 2 in. 29 ft. 1 in. 2 ft. 5 in. 4 ft. 6 in.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
Mertsj
  • Mertsj
|dw:1371518331018:dw|
Mertsj
  • Mertsj
\[\frac{\sqrt{17}}{30}=\frac{4}{x}\]

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More answers

anonymous
  • anonymous
i still dont get it
anonymous
  • anonymous
@Mertsj
Mertsj
  • Mertsj
You find the hypotenuse of the first triangle using the Pythagorean Theorem. Do you understand that?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
@Mertsj
Mertsj
  • Mertsj
Do you understand that the hypotenuse is the ladder?
anonymous
  • anonymous
yeah @Mertsj
Mertsj
  • Mertsj
Do you understand that the two triangles are similar?
anonymous
  • anonymous
yeah @Mertsj
Mertsj
  • Mertsj
Do you know that corresponding sides of similar triangles have equal ratios?
anonymous
  • anonymous
no i do not @Mertsj
Mertsj
  • Mertsj
So that is a theorem you must learn: If two polygons are similar, the ratios of the corresponding sides are equal.
Mertsj
  • Mertsj
You should have learned that in geometry class.
anonymous
  • anonymous
i didnt learn much thats why im retaking it @Mertsj
anonymous
  • anonymous
Would it be the first choice?
Mertsj
  • Mertsj
no
Mertsj
  • Mertsj
Did you cross multiply?
anonymous
  • anonymous
120=root 17X
anonymous
  • anonymous
@Mertsj
anonymous
  • anonymous
@jim_thompson5910
anonymous
  • anonymous
29 ft 1in!
Mertsj
  • Mertsj
yes

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