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zhuklara [117]
3 years ago
14

Ryan called each school in the district to determine whether or not they have a recycling program. What is true about Ryan’s dat

a collection?
Ryan conducted a survey where he asked about qualitative data.
Ryan conducted a survey where he asked about quantitative data.
Ryan conducted an observational study where he asked about qualitative data.
Ryan conducted an observational study where he asked about quantitative data.
Mathematics
1 answer:
hram777 [196]3 years ago
8 0

Answer: It’s A on edge

Step-by-step explanation:

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Answer:

-164x^2

Step-by-step explanation:

The Perimeter of a square is 4s where s is the length of 1 side.

So P=4(-41x^2) 41*4=164 ----> P=-164x^2

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si

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3 years ago
the boundary of a rectangular farm field in ireland has a straight rock wall along one side and fences along its other three sid
Inessa [10]

Answer:

781250 ft^{2}

Step-by-step explanation:

Let y is the length of the farm field

Let x is the width of the farm field

Given that, no fencing is necessary along the rock wall, so we can find the perimeter of the farm is:

2x + y = 2500 feet

<=> y = 2500 -2x

The are of the farm has the following formula:

A = x*y

<=> A = x(2500 - 2x)

<=> A = 2500x -2x^{2}

To have  the maximum area of field in square feet, we need to use differentials to estimate:

\frac{dA}{dx} = 2500 - 4x

Set \frac{dA}{dx} = 0, we have:

2500 - 4x  = 0

<=> x = 625 feet.

=> y = 2500 - 2*625 = 1250 feet

So the maximum area of field is:

A = x*y = 625*1250 = 781250 ft^{2}

7 0
3 years ago
Helen bought a four-unit apartment building for $561,000. The property lost value at a rate of 4.1% per year. Helen rented out e
ra1l [238]

Answer:

The correct answer is B

Step-by-step explanation:

$45,700 loss

5 0
3 years ago
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