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Tju [1.3M]
3 years ago
9

In the diagram, △ABC∼△DEF. The area of △ABC is 180 square centimeters. Find the area of △DEF.

Mathematics
2 answers:
schepotkina [342]3 years ago
5 0

Answer:

The area of ΔDEF is 60 cm^{2}

Step-by-step explanation: The similarity ratio of 2 triangles is 12/4=3. So we take 180/3=60

Alexeev081 [22]3 years ago
4 0

Answer:

20

Step-by-step explanation:

The first step is to find out the similarity reason of the sides of the triangle, so we just divide the big side by the small side (12/4=3).

Now, for the similarity reason of the areas, we just square that number (3^2=9).

Then we just divide the area of the big triangle by 9, which is 180/9= 20.

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Answer:

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Step-by-step explanation:

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3 years ago
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Klio2033 [76]

Answer:

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Step-by-step explanation:

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3 years ago
What value of cc​ will complete the square below and make the expression a perfect square trinomial?
Sav [38]

Question: What value of c​ will complete the square below (x^{2} +30x+c) and make the expression a perfect square trinomial?

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Step-by-step explanation:

Perfect square trinomials come in the form a² + 2ab + b², which is equal to (a + b)². In the presented trinomial, we can immediately identify that <u>a = x, and b² = c</u>, but we need to find the numerical value of c.

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Dividing by 2x on both sides gives us <u>b = 15</u>. Therefore, c = b² = 15² = 225. (As a squared binomial, this would be (x + 15)² as a = x and b = 15.)

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