Seudónimo Seudónimo
  • 01-09-2020
  • Mathematics
contestada

D is between C and E, CD = x 2 , CE = 32-2x, and DE = 12x. Find CD, DE, and CE.

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 02-09-2020

Answer:

  • CD = 4
  • DE = 24
  • CE = 28

Step-by-step explanation:

The segment addition theorem tells you ...

  CD +DE = CE

  x^2 +12x = 32 -2x

Subtract the right side to put this in standard form.

  x^2 +14x -32 = 0

  (x +16)(x -2) = 0

  x = -16 or 2

In order for DE to have a positive length, we must have x > 0. So ...

  CD = x^2 = 2^2 = 4

  DE = 12x = 12(2) = 24

  CE = 32 -2x = 32 -2(2) = 28

Answer Link

Otras preguntas

PLEASE HELP I GIVE THANKS
where are the three parts of an atom located
a tabletop in the shape a trapezoid has an area of 6550 square centimeters its longer base measures 115 centimeters and the shorter base is 85 centimeters what
Why was wilson not able to finish his speaking tour
Please help with Algebra 1
On a map, the distance between two cities is 7.3 centimeters. The map scale is 1 cm:50 km. What is the actual distance between the two cities?
what's the percentage of 1/8 ?
what is the geometric mean between 6 and 20?
On Being Brought from Africa to America by Phillis Wheatley 'Twas mercy brought me from my Pagan land, Taught my benighted soul to understand That there's a God
In a probability experiment, Craig rolled a six-sided die 55 times. The die landed on a number greater than three 31 times. What is the ratio of rolls greater t