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vitfil [10]
3 years ago
9

A circle have a diameter of 18 meters. What is its

Mathematics
1 answer:
Sergio [31]3 years ago
3 0

Answer:

A. 56.54867 rounded to 56.56

Step-by-step explanation:

18/2=9

r=9

C=2πr=2·π·

C=2(3.14)(9)

9≈56.54867

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strojnjashka [21]

Answer:

  1. y = 0.937976x +12.765
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  3. $31,524
  4. the cost increase each year

Step-by-step explanation:

1. For this sort of question a graphing calculator or spreadsheet are suitable tools. The attached shows the linear regression line to have the equation ...

... y = 0.937976x + 12.765

where x is years since 2000, and y is average tuition cost in thousands.

2. The y-intercept is the year-2000 tuition: $12,765.

3. Evaluating the formula for x=20 gives y ≈ 31.524, so the year-2020 tuition is expected to be $31,524.

4. The slope is the rate of change of tuition with respect to number of years. It is the average increase per year (in thousands). It amounts to about $938 per year.

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3 years ago
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3 years ago
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Can someone help me graph the line
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To find slope use the slope formula. Then, use y=mx+b. Plug in the numbers. 
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2 years ago
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