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4-8.

Now Croakie can do a super high jump!

The first time he performed his new super-high-jump routine, he did three super-high jumps and then hopped five feet. The second time, he did only two super-high jumps and then hopped six feet. Both times, he covered the same distance. His attempts are shown in the diagram at right.

First sequence

A line segment with 4 sections, 3 are equal, each labeled, x, with last section labeled 5.

Second sequence

A line segment with 3 sections, 2 are equal, each labeled, x, with last section labeled 6.

  1. How far does Croakie travel in one super-high jump? Explain or show how you know.

    In Croakie's first attempt he crossed the tightrope like this:

    In Croakie's second attempt he crossed the tightrope like this:

    Because both equations are equal to the length of a tightrope, you can make them equal to each other,
    like this: 

    1 foot. Make sure you know how to get this answer.

  2. How long is his whole super-high-jump routine? How can you tell?

  • Since you figured out that Croakie's super-high jump (x) equals  foot, you can simply substitute
    for into either of his routines.