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Tomtit [17]
3 years ago
6

Find the GCF (greatest common factor) of 84 and 36. Be sure to show your work. Then, using complete sentences, explain what your

answer means.
This is not for a quiz!
Come on plz answer!
Mathematics
2 answers:
Serga [27]3 years ago
8 0

Answer:

12

Step-by-step explanation:

84 ÷ 12= 7  &  36 ÷ 12 = 3

The answer is 12. By using division, & backing into the number, you can find the GCF of both numbers. This means 12 is the highest number you can multiply by a number to get both 84 and 36.

Vsevolod [243]3 years ago
4 0

The answer is 4. By using the factor tree method, you can figure out the GCF of each number. This means 4 is the highest number you can mulitply anything by to get both 84 and 36.

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bezimeni [28]

Answer:

45

Step-by-step explanation:

AEF is a similar triangle to ABC. that means it has the same angles, and the sides (and all other lines in the triangle) are scaled from the ABC length to the AEF length by the same factor f.

now, what is f ?

we know this from the relation of AC to FA.

FA = 12 mm

AC = 12 + 28 = 40 mm

so, going from AC to FA we multiply AC by f so that

AC × f = FA

40 × f = 12

f = 12/40 = 3/10

all other sides, heights, ... if ABC translate to their smaller counterparts in AEF by that multiplication with f (= 3/10).

the area of a triangle is

baseline × height / 2

aABC = 500

and because of the similarity we don't need to calculate the side and height in absolute numbers. we can use the relative sizes by referring to the original dimensions and the scaling factor f.

baseline small = baseline large × f

height small = height large × f

we know that

baseline large × height large / 2 = 500

baseline large × height large = 1000

aAEF = baseline small × height small / 2 =

= baseline large × f × height large × f / 2 =

= baseline large × height large × f² / 2 =

= 1000 × f² / 2 = 500 × f² = 500 ×(3/10)² =

= 500 × 9/100 = 5 × 9 = 45 mm²

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2 years ago
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Step-by-step explanation:

4 0
3 years ago
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Goshia [24]

Answer:

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Step-by-step explanation:

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3 years ago
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melisa1 [442]

Answer:

3x+3y and distributive property

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