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alexira [117]
3 years ago
5

Can someone help me and show how to write the perimeter equation to find x.

Mathematics
1 answer:
disa [49]3 years ago
7 0

Answer:

a) 10x + 8 = 21

b) x = 1.3

Step-by-step explanation:

The line of symmetry is a vertical line that passes through point C.

That makes sides BC and CD congruent, and sides AB and ED congruent.

perimeter = AB + BC + CD + DE + EA

perimeter = 2x + 3 + x + 1 + x + 1 + 2x + 3 + 4x = 10x + 8

perimeter = 21

a) Equation:

10x + 8 = 21

b)

10x + 8 = 21

10x = 13

x = 1.3

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Which equation is true?
enot [183]
Lets solve all of these:-

#1

√361 = 361 · 2
         
         ?
√361 = 361 · 2
√361 = 19
361 · 2 = 722

19 ≠ 722
So this equation is not true

#2:-

√361 = 19²

         ?
√361 = 19²
√361= 19
19² = 19 · 19 = 361

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So this equation is not true

√361 = 361 ÷ 2 

         ?
√361 = 361 ÷ 2 
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361 ÷ 2 = 180.5

√361 ≠ 361 ÷ 2 
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√361 = √19²
√361 = 19
√19² = 19

19 = 19

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Step-by-step explanation:

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