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mylen [45]
3 years ago
15

The rug in Alan's room has an area of 18 square feet. He is planning to buy another rug that is twice as long and twice as wide.

What is the area of the new rug?
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
5 0
Yeah its gonna be 18 square feet in wide and length and the area is gonna be 36 square feet
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Why is C the answer for this question?
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Step-by-step explanation:

A left Riemann sum approximates a definite integral as:

\int\limits^b_a {f(x)} \, dx \approx \sum\limits_{k=1}^{n}f(x_{k}) \Delta x \\where\ \Delta x = \frac{b-a}{n} \ and\ x_{k}=a+\Delta x \times (k-1)

Given ∫₂⁸ cos(x²) dx:

a = 2, b = 8, and f(x) = cos(x²)

Therefore, Δx = 6/n and x = 2 + (6/n) (k − 1).

Plugging into the sum:

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Therefore, the answer is C.  Notice that answer D would be a right Riemann sum rather than a left (uses k instead of k−1).

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3 years ago
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Does 5mm, 1mm, 10mm make a triangle
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Answer:

Step-by-step explanation:

No. Each side must be less than the sum of the remaining two sides.

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