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11 votes
11 votes
Don't understand this question

Don't understand this question-example-1
User Rakesh G R
by
3.0k points

2 Answers

21 votes
21 votes

Answer:

Determining the input value of 19, we get 2/3 as an output after evaluating on the given polynomial.

Explanation:

Equation:


\cfrac{2}{3} = - \cfrac{1}3x + 7

Find the value of x


  • \cfrac{2}{3} - 7 = - \cfrac{1}{3} x


  • \cfrac{2 - 21}{3} = - \cfrac{ 1}{3}


  • \cfrac{-19}{3} = \cfrac{ - 1}{3} x


  • \cfrac{ \cfrac{ \cancel- 19}{ \cancel3} }{ \cancel- \cfrac{1}{ \cancel3} } = x


  • x = 19

Value of x is 19.

Checking:

When Evaluating x = 19 on the polynomial,

  • f(x) = -1/3 x + 7
  • f(19) = -1/3(19) + 7
  • f(19) = -19/3 + 7
  • f(19) = -19 + 21 /3
  • f(19) = 2/3
User Omgmakeme
by
3.3k points
16 votes
16 votes

Answer:

19

Explanation:

Multiplying both sides of the equation by -3, we get an answer of 19

User Desmond Smith
by
3.4k points