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

The proteins in the cell membrane allow substances to come or go, based on their concentrations. This is an important part of _________________, which maintains
A chef cooked seven kilograms of mashed potatoes for a dinner party. If the guests only ate three-quarters of the amount he cooked, how much did they eat?......
Multiply. (–2.1) ∙ (–1.4) a. –3.5 b. –2.94 c. 2.94 d. 3.5
30-[(9x2)-(3x4)] numerical expression ;)
What is the role of DNA helicase during DNA replication?
Two equations are shown: Equation 1: (x –12) =12 Equation 2: y – 12 = 12 Solve each equation
What is the area of a rectangle with vertices at (4, 3), (11, 3), (11, 9), and (4, 9)?
Choose the correct sentence. a. You paid your money and takes your choice. b. You payes your money and takes your choice. c. You pay your money and take your ch
Energy is released to be used by a cell when a phosphate group is removed from ADP to form ATP added to ADP to form ATP removed from ATP to form ADP added to AT
Which factors caused crops to stop growing in Sumer? Choose all answers that are correct. a. poor drainage b. salty soil c. extended droughts d. pest infestatio