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Andreyy89
3 years ago
7

Please help I can’t do this

Mathematics
1 answer:
worty [1.4K]3 years ago
4 0
Answer to a1=6.8
a2= 0.5
mean is 6.78
i don’t know the rest sorry
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4. What are the terms in the expression, 9- 4 + 3b + 7a?
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Step-by-step explanation:

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3 years ago
Please respond to the question below in your own words with proper explanations
ycow [4]

Answer:

t(400)=673.

It means that 673 of 9 inch tiles are required to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

Step-by-step explanation:

Given:

The function relating number of 9 inch tiles required and area to cover is:

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Now, plug in 400 for A to evaluate t(400).

t(400)=\frac{144}{9.25^2}\times 400=\frac{144\times 400}{85.5625}=\frac{57600}{85.5625}=673.19\approx6225

Therefore, Don required  673 of 9 inch tiles to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

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Can I ask how did u make the picture? Plz tell me how
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