10-05-2014
Mathematics

contestada

Evaluate the expression, using the given value of the variable. 2 – 8x + 3x when x = 5 A. –53 B. –23 C. –15 D. 57

Respuesta :

10-05-2014

2 - 8x + 3x
x = 5
2 - 8(5) + 3(5) =
2 - 40 + 15 =
- 40 + 17 = - 23. (Correct answer B.)

Answer Link

10-05-2014

[tex]2- 8x + 3x =2-5x \\ \\x=5 \\ \\2-5x = 2-5\cdot 5=2-25=-23\\ \\Answer : \ B. \ \ \ -23[/tex]

Answer Link

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