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aev [14]
3 years ago
9

A rectangle is twice as long as it is wide. Its width is 51⁄2 cm. Find the area of the rectangle.

Mathematics
1 answer:
Zarrin [17]3 years ago
4 0

Step-by-step explanation:

The are of rectangle is 1300.5cm2

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The cost of controlling emissions at a firm rises rapidly as the amount of emissions reduced increases. Here is a possible model
Nadusha1986 [10]

Answer:

\bar C = 4100\,dollars

Step-by-step explanation:

a) The average value of a function is given by the following integral:

\bar C = \frac{\int\limits^{q_{max}}_{0} {4100+90\cdot q^{2}} \, dq }{q_{max}}

\bar C = \frac{1}{q_{max}}\cdot \left(4100\cdot q_{max} + 30\cdot q_{max}^{3} \right)

\bar C = 4100 + 30\cdot q_{max}^{2}

b) The determination of the minimum average daily cost per pound of pollutant is done by the First Derivative Test and the Second Derivative Test, which is:

\bar C' = 60\cdot q_{max}

60\cdot q_{max} = 0

q_{max} = 0

\bar C'' = 60 (absolute minimum).

The level of reduction corresponding to the lowest average daily cost per pound of pollutant is:

\bar C = 4100\,dollars

3 0
4 years ago
Let f(x)
Dmitry [639]

Hmmm

that's a toughy not sure maybe the last one....

8 0
3 years ago
What is the domain of the set of ordered pairs?
lilavasa [31]

Answer:

<h2>D. {-4, 1, 0, 2, 7}</h2>

Step-, by-step explanation:

For any order pairs (x, y), x is an element of a Domain and y is an element of a Range.

For {(7, -3); (-4, 2); (-1, 0); (2, -4); (0, -6)}

the set {7; -4, -1, 2, 0} is a Domain.

5 0
4 years ago
Help with those math probelm please
Effectus [21]

Answer:

170 books

Step-by-step explanation:

Each book equals 10 books. So 17x10 equals your answer! (170)

Good luck to you!

6 0
3 years ago
Solve each proportion, round to one decimal place.<br> 4/9=x/20
guapka [62]

In order to solve a proportion you need to cross multiply, so you would do:

4x20 and 9xX and you would get...

9x=80

then divide by nine to get

x=8.8888888889

which is technically 8.9

3 0
4 years ago
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