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41 votes
Im so confused on this (help ASAP)

Im so confused on this (help ASAP)-example-1
User Heberti Almeida
by
2.9k points

2 Answers

10 votes
10 votes
its say that
(5x-1)+(5x-1)+(2.2x+10) is equal to 4(6.5x-11.8) ***the four represents the four sides of the square***
first u have to simplify so add all the numbers with x and all the numbers without x
12.2x + 8 equals 26x - 47.2
now u have to move the x values on one side and the non values to the other
8+47.2 = 26x-12.2x
so u get
55.2 = 13.8x
now u divide by 13.8 on both sides so u get x
x = 4
User Aroyc
by
2.8k points
16 votes
16 votes

Answer:

x = 4

Explanation:

Perimeter of triangle: P = (5x -1) + (5x -1) + (2.2x + 10)

Perimeter of square: P = 4(6.5x - 11.8)

so (5x -1) + (5x -1) + (2.2x + 10) = 4(6.5x - 11.8)

5x - 1 + 5x - 1 + 2.2x + 10 = 26x - 47.2

12.2x + 8 = 26x - 47.2

26x - 12.2x = 8 + 47.2

13.8x = 55.2

x = 55.2/13.8 = 4

User Stephen Simmons
by
3.3k points