They simplify operations when the systems are not encumbered by the variables.
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Please, see the attached file.
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Answer:
The one you chose
Step-by-step explanation:
We can see that the area of the triangle is: 5.65in².
<h3>What is a triangle?</h3>
A triangle is actually known to be a shape that has three sides, three angles and three vertices. It's also known as a plane shape.
In order to find the area of the triangle, we will use Pythagorean Theorem: c² = a² + b².
Where c = hypotenuse = 6in.
b = 2in.
6² = a² + 2²
36 = a² + 4
a² = 36 - 4 = 32
a = √32
Area of the triangle = ½ × base × height.
Where base = √32
height = 2
Thus: A = ½ × √32 × 2
A = √32 = 5.65in².
Learn more about area of triangle on brainly.com/question/17335144
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It's d plus a -. Which is 20