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melamori03 [73]
3 years ago
9

The number of people who live in a unit of area is called the population density of the area. It usually given as people "per sq

uare mile" or "per square kilometer".
A map of the Orchard Hill Neighborhood is shown. The population of the Orchard Hill Neighborhood is 360 people. The lenght of each block is the same and the lenght of 20 blocks is 1 mile.

What is the area in square miles of Orchard Hill?

A. 0.35 square mile

B. 0.03 square mile

C. 0.15 square mile

D. 0.60 square mile​

Mathematics
1 answer:
bazaltina [42]3 years ago
8 0

Answer: 0.03

Step-by-step explanation:

1 block = 1/20 mile = 0.05 miles

4(0.05) = 0.20

3(0.05) = 0.15

A=l•w=0.20(0.15)=0.03

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(x-3)(x-3) is a perfect sq trinomial --> x^2-6x+9

(x+2)(x-3) is not a perfect square trinomial because its not in the form (a+b)^2 or (a-b)^2

Now to answer your question,

for the first one, x^2-16x-64, you cannot factor it so it is not a perfect square trinomial

for the second one, 4x^2 + 12x + 9, you can factor that into (2x+3)(2x+3) = (2x+3)^2 so this is a perfect square trinomial

for the third one, x^2+20x+100 can be factored into (x+10)(x+10) so this is also a perfect square trinomial

for the fourth one, x^2+4x+16 cannot be factored so this is not a perfect square trinomial

Therefore, your answer is choices 2 and 3

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Step-by-step explanation:

8 0
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Maristella is constructing an isosceles triangle to use as a model in her Algebra class. The perimeter of her triangle is 24 cm.
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Isolating s, the equation written in terms of s is:

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-------------------------

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b = 24 - 2s

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Solving each fraction:

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A similar problem is given at brainly.com/question/5123313

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