ShmeatMonsta
ShmeatMonsta ShmeatMonsta
  • 25-05-2021
  • Mathematics
contestada

I'm confused on how to do this question

Im confused on how to do this question class=

Respuesta :

akposevictor
akposevictor akposevictor
  • 30-05-2021

Answer:

CE = 35

Step-by-step explanation:

Based on the Triangle Proportionality Theorem, BD divides AC and CE proportionally. This implies that:

BC:AB = DC:DE

Plug in the values

(x - 5)/6 = 14/(2x + 3)

(x - 5)(2x + 3) = 14*6

x(2x + 3) -5(2x + 3) = 84

2x² + 3x - 10x - 15 = 84

2x² - 7x - 15 - 84 = 0

2x² - 7x - 99 = 0

Factorize

2x² - 18x + 11x - 99 = 0

2x(x - 9) +11(x - 9) = 0

(2x + 11)(x - 9) = 0

2x = -11

x = -11/2

Or

x = 9

Let's take the positive value of x

Thus:

CE = 14 + 2x + 3

Plug in the value of x

CE = 14 + 2(9) + 3

CE = 14 + 18 + 3

CE = 35

Answer Link

Otras preguntas

Does the phrase "Dar de comer al perro" mean "to feed the dog" or "to give the dog something to eat"?
if the equation is h= -2x^2 + 12x -10how do I find the max height?
At 30 degrees, Edgardo said the temperature was warm enough to go swimming. Did he mean to give the temperature in Fahrenheit or Celsius. Explain.
How do you say 'fat pig' in German
What do you measurement of capacity?
what is answer to x+10=-13  what does x equal
The newly formed Communist PartyA.signed a treaty with the Central PowersB. signed a treaty with the AlliesC. requested protection from JapanD. requested protec
How to convert fractions into decimals?
The product of the first and last digit is equal to 48 The sum of the last two digits is greater than 7The sum of the first two digits is equal to 9
When plastic deformation of a material occurs, the material _____.