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Degger [83]
3 years ago
9

The Cheer Club is making a banner for your school using the design shown. The area of the yellow portion is 1 ft2. The expressio

n 8z−1 represents the area in square feet of the blue material in the banner. Evaluate the expression for z=9 to find the area of the blue material. When the length z is 9 ​feet, the blue area is ft2?
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
3 0

Answer:

Blue = \frac{8}{9}

Step-by-step explanation:

Given

Yellow = 1ft^2

Blue = 8z^{-1

Required

Evaluate Blue when z = 9

To do this, we simply substitute 9 for z in Blue = 8z^{-1

Blue = 8 * 9^{-1

Convert indices to fraction

Blue = 8 * \frac{1}{9}

Blue = \frac{8}{9}

<em>Hence, the blue section has an area of </em>\frac{8}{9}ft^2<em></em>

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