hailielynn2005 hailielynn2005
  • 04-06-2019
  • Mathematics
contestada

Nine times the square of a number plus 8 is 44. The number is positive. What’s the number?

Respuesta :

gmany
gmany gmany
  • 13-07-2019

Answer:

n = 4

Step-by-step explanation:

[tex]n-number,\ n>0\\\\9n^2+8=44\qquad\text{subtract 8 from both sides}\\\\9n^2+8-8=44-8\\\\9n^2=36\qquad\text{divide both sides by 9}\\\\\dfrac{9n^2}{9}=\dfrac{36}{9}\\\\n^2=4\iff n=\pm\sqrt4\\\\n=\pm4[/tex]

Answer Link

Otras preguntas

Convert the equation: y+7=-2(x-3) into slope-intercept form.
Otis has a box of coins that he uses when he plays poker with his friends. the box containts 44 coins, consisting of pennies, dines, and quarters. the number of
I need help with this question?????
Geometry! Please help!! 1).What is the value of x? Enter your answer, as a decimal, in the box. 2). What is the value of c? Enter your answer in the box.
Please help need help
PLEASE HELP! I need help on geometry problem plz!
What are the coordinates of the vertices of the triangle under the translation (x, y) —> (x + 2, y + 3)?
How to get to landscape mode in microsoft word
The ________________ is an orchestral piece that is played at the beginning of a larger work such as an opera, oratorio, or suite. it serves to set the mood of
Write the formula for the ionic compound that forms between na and cl2