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elena-s [515]
3 years ago
13

Any help would be great plz.

Mathematics
1 answer:
Yuri [45]3 years ago
6 0

Answer:

<h2>x≠{-3,0,-15,3,15}</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • equation
  • PEMDAS
<h3>tips and formulas:</h3>
  • to figure out the domain restrictions let's use the given value
<h3>let's solve:</h3>

let's check the equality by using x=-3

  • 2×-3/15 = 2/3
  • -6/15=2/3
  • -3/5≠2/3

let's check the equality by using x=0

  • 2×0/15=2/3
  • 0/15=2/3
  • 0≠2/3

let's check the equality by using x=-15

  • 2×-15/15=2/3
  • 2×-1=2/3
  • -2≠2/3

let's check the equality by using x=3

  • 2×3/15=2/3
  • 6/15≠2/3
  • 3/5≠2/3

let's check the equality by using x=15

  • 2×15/15=2/3
  • 2≠2/3

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Answer:

SAS theorem

Step-by-step explanation:

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So,  \frac{CE}{CB} = \frac{DC}{AC}  and m∠ECD = m∠BCA because vertical angles are congruent

Therefore ΔECD is similar to ΔBCA by SAS theorem

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