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 statement best describe a commission system?
A diet rich in fiber and fluids would be most beneficial for people with
Solve the system by the elimination method. Check your work. 3a + 5b - 7 = 0 a - 2b - 4 = 0
Who was the most famous ruler of the Ghaznavid Empire? Mahmud Tughril Beg Harun al-Rashid Ibn Battuta
What country is between Czechoslovakia and Yugoslavia.
what is brown has a hump and lives at the north pole
(Quick please ) !!!!!!!!!!!!!!!! Help me!!!!! find the surface area of the rectangular prism!!!!!! thank you
Missouri was admitted as a "free" state a. True b. False
Terry has a box that originally held 64 crayons she is missing 25% of the crayons how many Crayons are missing?
If salt is dissolved in water, water serves as the: a. solute. b. solvent. c. dissolved medium. d. none of the above