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Part A: Explain why x = 6 makes 4x − 5 ≤ 19 true but not 4x − 5 < 19. (5 points)

Part B: What value from the set {4, 5, 6, 7, 8} makes the equation 4x + 3 = 23 true? Show your work

Sunrisesk8r  Jul 25, 2017
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Part A : Explain why x = 6 makes 4x − 5 ≤ 19 true but not 4x − 5 < 19.

 

Note :    4(6)  - 5 = 24 - 5  =  19  ....so.....the first is true but not the second

 

 

Part B: What value from the set {4, 5, 6, 7, 8} makes the equation 4x + 3 = 23 true? 

 

4x  + 3   = 23   subtract 3 from both sides

 

4x  = 20          divide both sides by 

 

x  =  5

 

 

 

cool cool cool

CPhill  Jul 25, 2017

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