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dalvyx [7]
2 years ago
15

Find the area of an equilateral triangle whose perimeter is 15 units.

Mathematics
2 answers:
adoni [48]2 years ago
8 0
Area= 12.5 units^2.
ohaa [14]2 years ago
8 0

Answer:

The area is 1/2×3×3= 4.5

Step-by-step explanation:

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What is the length of the diagonal of a square with side lengths 7 square root of 2 ? round to the nearest tenth if necessary?
mr_godi [17]
There is 2 ways to solve this type of question.

Method 1
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Formula
--------------------------------------------------
a² + b² = c²

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Apply the formula
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(7√2)² + (7√2)² = c²
c² = 98 + 98
c² = 196
c = √196
c = 14

--------------------------------------------------
Ans: The diagonal length is 14cm 
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_____________________________________________________________

Method 2
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Identify the triangle
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This is a special triangle
45° - 45° - 90°

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Property of the Angles 
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x - x - x√2

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Find hypotenuse
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Given that the non-hypotenuse is 7√2

Hypotenuse =  (7√2)(√2)
Hypotenuse =  7 x 2
Hypotenuse = = 14cm

--------------------------------------------------
Ans: The diagonal length is 14cm 
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6 0
2 years ago
Latex- free gloves can be purchased in a box of 100 for $44.95 or a box of 50 for $23.50. Which one would be the best deal
malfutka [58]
The box of 100 would be the better deal, considering buying 2 boxes of 50 would turn out to be $47.00
3 0
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when a relation is drawn on an xy-plane what is another name for the set of all x values from its graph?
Galina-37 [17]

Another name for the set of all x-values for a relation is: domain.

<h3>What is the Domain of a Relation?</h3>

The domain of a relation can be defined as all the x-values that corresponds to the y-values that are plotted on a graph.

They are referred to as the input or the domain of the relation. Therefore, another name for the set of all x-values plotted for a relation on a graph is: domain.

Learn more about domain on:

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mihalych1998 [28]
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taurus [48]
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