roxa0sgom0ebabell roxa0sgom0ebabell
  • 25-01-2016
  • Mathematics
contestada

The area of a rectangular floor is represented by 9x^2 + 15x square feet and the width of the floor is 3x feet. Which expression represents the length of the floor?
a. 8x ft
b. (3x + 5) ft
c. (3 + 5x) ft
d. (9x2 + 12x) ft

Respuesta :

Аноним Аноним
  • 25-01-2016
To work this out, we must divide the area by the width
(9x² + 15x) / 3x
First 9x²
9x² / 3x = 3x
Then 15x
15x / 3x = 5

3x + 5 ft
Answer Link

Otras preguntas

explain the shift of power from kings to nobles during the middle ages
What digit appears in the units place in the number obtained when 2^320 is multiplied out?
An example of a stateless nation in the middle east is provided by who?
7b ÷ 12 = 4.2                  What is b?
how to separate salt and sugar?
A rectangular stage set up in a theater has an area of (15x^2+3x-12) square feet. Factor the polynomial completely.
What digit appears in the units place in the number obtained when 2^320 is multiplied out?
Solve the system of equations using substitution. y= 3/4x-7 4x- 6y=50
How was genghis khan able to unite the nomadic mongols
If a function f is continuous for all x and if f has a relative maximum at (-1, 4) and a relative minimum at (3, -2), which of the following statements must be