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2 years ago

The Willis Tower in Chicago is about 1454 feet tall a model of it has a scale of 2 inches equals 45 feet how tall is the model

Mathematics

1 answer:

Kitty [74]2 years ago

6 0

Answer:

<u>The model is 64.62 inches of height or 5.39 feet</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Height of the Willis Tower in Chicago = 1,454 feet

Scale of the model = 2 inches : 45 feet height

2. How tall is the height?

For answering that question, we will use the following expression:

Height of the model = Height of the Willis Tower in Chicago/Scale in feet * Scale in inches

Replacing with the real values, we have:

Height of the model = 1,454/45 *2

Height of the model = 32.31 * 2 = 64.62 inches

64.62 inches/12 = 5.39 feet

<u>The model is 64.62 inches of height or 5.39 feet</u>

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Step-by-step explanation:

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Test if the battery life is more than twice of 5 hours:

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At the null hypothesis, we test if the battery life is of 10 hours or less, than is:

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