zulqurnain zulqurnain

02-04-2017
Mathematics

contestada

ABC IS a right angled triangle at B and D is a point on BC. If AD=18cm , BD=9cm and CD = 4 cm, find AC

Respuesta :

ElenaClairmont ElenaClairmont

02-04-2017

[tex]AB = \sqrt{ AD^{2} - BD^{2} } = \sqrt{243} = 9 \sqrt{3} [/tex]
[tex]AC = \sqrt{ AB^{2} + BC^{2} } = \sqrt{412} = 2 \sqrt{103} [/tex]

Answer Link

Otras preguntas

The graph below is used by company 2 to show the average monthly electric cost based on the electricity provider. How could the graph be redrawn so that the di

In a group discussion, which of these is the best example of challenging the credibility of a source? A. Readers of john milton's paradise lost often search fo

what are two things a scientist can do to cause some substances that are mixed together to react?

The word “explicate” means to read. TRUE FALSE

Which punctuation mark belongs at the end of the sentence? Please put the dirty dishes in the sink A. . B. ! C. ?

Which is the most accurate definition of bankruptcy?

Multiply the expression: (-5r2s)(rs2) 5r3s3 -5r2s2 -5r3s3 r3s3

What is the radius of a circle represented by the given equation? x2 + y2 – 4x – 6y + 12 = 0?

As a psychologist employed by a medical school, dr. mcnerney specializes in research on the causes of stress and on the effectiveness of various techniques for

If a $200 billion increase in investment spending creates $200 billion of new income in the first round of the multiplier process and $160 billion in the second