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2 years ago

Factor this expression completely, then place the factors in the proper location on the grid. 9x2 - y2

Mathematics

1 answer:

andreev551 [17]2 years ago

6 0

Answer:

${ \tt{ {9x}^{2} - {y}^{2} }} \\ = { \tt{( {3x)}^{2} - {y}^{2} }} \\ = { \tt{(3x - y)(3x + y)}}$

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Find the diameter of a circle with a circumference of 443 feet. Use 3.14 for pi.

marishachu [46]

Answer:

$\huge\boxed{\sf d = 141\ feet}$

Step-by-step explanation:

Given Data:

Circumference = C = 443 ft

Required:

Diameter = d = ?

Formula:

d = C / π

Solution:

d = 443 / 3.14

d = 141.0 feet

d = 141 feet

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2 years ago

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Nataly [62]

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3 years ago

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Anastaziya [24]

Answer:

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Step-by-step explanation:

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2 years ago

A forest cover 43,000 acres. A survey finds that 0.2% of the forest is old growth tress. How many acres of old growth trees are

Sveta_85 [38]

Given:

Total forest area = 43,000

Old growth trees forest = 0.2%

To find:

The area of the old growth trees.

Solution:

We have,

Total forest area = 43,000

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Area of the old growth trees = 0.2% of 43,000

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2 years ago