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Oduvanchick [21]
3 years ago
13

A waterslide is 4.2 m high and has a support 2.4 m tall. If a student reaches this support when she is 3.1 m down the slide, how

long is the slide?

Mathematics
1 answer:
Lyrx [107]3 years ago
5 0
Refer to the diagram shown below.

The triangles ΔABC and ΔADE are similar because of AAA.
Therefore
\frac{AC}{AE} =  \frac{BC}{DE} \\\\
 \frac{x}{x+3.1}  =  \frac{2.4}{4.2} =  0.5714 \\\\ x = 0.5714(x+3.1)
0.4286x = 1.7713
x = 4.133 m

The length of the slide is x + 3.1 = 4.133 + 3.1 = 7.233 m

Answer: 7.2 m (nearest tenth)

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