tannerkimberly
tannerkimberly tannerkimberly
  • 13-11-2018
  • Mathematics
contestada

need help with solving the quadratic equation word problem!

need help with solving the quadratic equation word problem class=

Respuesta :

evgeniylevi
evgeniylevi evgeniylevi
  • 13-11-2018

Try this option:

1. the formula of the area is Area=Length*Width.

2. according to the condition the phrase 'the length is 1 ft. less then the double width' means: 2W-1=L.

3. if to substitute letters L and W into the formula of the area:

(2w-1)w=21; ⇒ 2w²-w-21=0; ⇒

[tex]\left \{ {{w=-3} \atop {w=7/2}} \right. \ \ for-the-length-only-positive-numbers; \ w=7/2[/tex]

4. finally: W=3.5 (ft); L=2W-1=6 (ft).

Answer Link

Otras preguntas

help me now and quickly or ___________
The numbers 1, 2, 3, 4, 5, 6 are written on identical cards and placed in a bag. A card is selected at random from the bag. Let A be the event "əb even number
PLEASE SHOW YOUR WORK TY! GIVING BRAINLIEST!!!
Which letter on this map identifies the city where revolutionaries stormed the Bastille? A D H N​
The element chlorine has atomic no.17 and atomic mass 35. Calculate the no. of protons, neutrons and electrons. ​
The area of the rectangle above is____square units.
A brief note on sociological imaginations.
What does x equal? Type only the number.
Which option is the best example of theme? A. I heard a rumor. B. Rumors might fly around the school cafeteria C. Be wary of rumors. D. There is a rumor about d
The assassination of Julius Ceasar Why was he killed? 3-5 sentences Please help thank you ♡