mahayess9319 mahayess9319
  • 04-06-2018
  • Mathematics
contestada

When the square of three times a positive integer is decreased by the integer, the result is $2010$. what is the integer?

Respuesta :

chickenheadbum3
chickenheadbum3 chickenheadbum3
  • 04-06-2018
x = a positive integer
3x = 3 times the number
9x^2 = the square of 3 times the number
.
9x^2-x = 2010
.
9x^2 -x -2010 = 0
So x = 15 is the only integer solution.
.
Checking this value, we find:
9*225 -15 = 2010
correct.
.
Answer: x = 15 ;)

Answer Link

Otras preguntas

Solve. x __ 2 = 7 ---------------------------------------- PLEASE HELP!
Observe preparation of dishes at your home. Identify two changes that can be reversed.
What times 3 equals 25
Who led movements to establish the Republic of Turkey? A. Aglar Baba B. Saad Zaghlul C. Mustafa Kemal D. Gamal Abdul Nasser
19 POINTS!!! How did The Prince influence European rulers?A. It convinced many rulers that people have a natural right to self-government. B. It made
What does the design of the UN flag mean?
The process by which a cell divides into two daughter cells is called A. cell division. B. metaphase. C. interphase. D. mitosis.
Write 10 sentences describing your weekend in french
Which expression is equivalent to x + x + x + 5 + 5, no matter what value is substituted in for x? A) 3x + 5 B) 3x + 7 C) x + 10 D) 3x + 10
"It felt as if the whole globe was dressed in snow." Simile or metaphor?