camillxa
camillxa camillxa
  • 05-04-2020
  • Mathematics
contestada

Evaluate 2x(second power)-1 when x = 3.
А. 35
В. 5
C. 25
D. 17

Respuesta :

igoroleshko156
igoroleshko156 igoroleshko156
  • 05-04-2020

Answer:

Option D, 17

Step-by-step explanation:

Step 1:  Set x to 3

[tex]2x^2 - 1[/tex]

[tex]2(3)^2 - 1[/tex]

[tex]2(9) - 1[/tex]

[tex]18 - 1[/tex]

[tex]17[/tex]

Answer: Option D, 17

Answer Link
abiolatolu90
abiolatolu90 abiolatolu90
  • 05-04-2020

Answer:

The answer is 17

Step-by-step explanation:

2x² - 1

When x = 3

2(3²) - 1

2*9 - 1

18 - 1

= 17

Answer Link

Otras preguntas

Which of the following describes a major difference between the Ottoman and Byzantine empires during the 1400s? A. Each empire possessed a weak military. B. Eac
How do longshore currents move sand?
Three ratios equivalent to 12/28
What is genotype for a recessive trait found on the female chromosome? Yh Xh XH YH
What is the mass and weight of a 10kg object on earth?
What effect did a drop in population have on the Roman Empire? A. a weakened consul B. a weakened military C. an increase in revenue D. a decrease in interna
Through which process is energy transferred to a molecule that the cell can use as fuel for its various activities?
how did William the conqueror crush rebellions
What does the acronym S.P.O.R.T. Principles stand for? How each one applies to a workout plan? (Modules 1 and 2)
How does geography impact history? How do the physical and human features of an area impact the events that happen there?