cagle54 cagle54
  • 01-11-2018
  • Mathematics
contestada

what is the length of EF in the right triangle below?

what is the length of EF in the right triangle below class=

Respuesta :

gmany
gmany gmany
  • 01-11-2018

Use the Pythagorean theorem:

[tex]|DF|^2+|EF|^2=|DE|^2[/tex]

We have |DF| = 12 and |DE| = 19. Substitute:

[tex]12^2+|EF|^2=19^2\\\\144+|EF|^2=361\qquad|-144\\\\|EF|^2=217\to|EF|=\sqrt{217}[/tex]

Answer: [tex]C.\ \sqrt{217}[/tex]

Answer Link

Otras preguntas

List two non-SI units for volume, and explain how they relate to the cubic centimeter.
what happens if you can't remove a splinter
how many grams are in 9.5 kilograms
Jessie has a box of 1,000 marbles. He has 75 yellow marbles, 230 red marbles, 331 blue marbles, and 364 green marbles. What fraction of his marbles are yellow?
The Smith family went out for dinner last night and reicved a great service. They decided to leave 20% for their waitress .if the dinner bill totaled $90, how m
Prior to the arrival of Europeans, what did the natives of North America have in common? a. They had elaborate trade networks. b. They all lived in small fami
equivalent ratio for 12/9
"My sister's friend Ana plays soccer". what is the complete subject and the Simple Subject
in the number 5.923 which number is in the thousandths place
is 9.23 greater than, less than or equal to 9.32