isadorarayne isadorarayne
  • 04-05-2020
  • Mathematics
contestada

Can you help me with this question?

Can you help me with this question class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 06-05-2020

Answer:

  16.2

Step-by-step explanation:

The angle internal to the triangle at B is the supplement of the one shown, so is 65°. That is equal to the angle internal to the triangle at D. Since the vertical angles at C are congruent, the two triangles are similar by the AA theorem.

Corresponding sides of similar triangles are proportional, so we can write the proportion shown in the attachment:

  BC/FC = DC/AC

  BC = FC(DC/AC) = 21.6(7.2/9.6)

  BC = 16.2 . . . . matches the first choice

Ver imagen sqdancefan
Answer Link

Otras preguntas

The right to life party is an example of what type of minor political party
The "Emancipation Manifesto" signed by Czar Alexander II _____. a. provided freedom of religion b. gave serfs land c. allowed free elections d. opened up pr
What's complementary strand of DNA would be produced from the strand CGT AT
Where do scientists and anthropologists believe early humans first emerged?
rx+h=sx-k solve for x
An organism has two types of cells: diploid somatic cells and haploid gametes. How does this organism reproduce? a.)Sexually b.)Asexually c.)Vegetatively
What is the prefix of dispelling?
Communist governments surrendered one-party control in 1989 and called for free elections in all of the nations of Eastern Europe, EXCEPT __________.
how do you convert units in length?
How many significant figures are in the measurement 603.040 g? A. 3 B. 4 C. 5 D. 6