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

Bacteria are very small single-celled organisms that lack a nucleus. Although bacterial cells are less complex than the cells that make up the human body, bacte
Material in the cell nucleus made up of DNA and various kinds of protein is called_______?
What is the interest earned at $350 at 3% for 10 years
¿Que es la humanización?
How do you find the answer to 6*3pi but in pi form?
Earth's population continues to grow daily. Which of the following statements best illustrates a possible consequence of such rapid growth?
Is it possible to cut a rectangular prism so that its cross section is a circle orman ellipse?
literal equation R=R1+R2 for R2
Madagascar (Lesson 06.01) •Which one of the following different creepy crawlers would you likely not discover when exploring the Madagascan forest? – giant hi
3. Mauro has 140 ft of rope. He will cut it into two pieces so that the length of the longer piece is 3 times the length of the shorter piece. What will the len