Hayilamarsit Hayilamarsit

11-04-2021
Mathematics

contestada

find the value of" A" such that triangle DEF with vertices D (a,1) , E(10,7) and F(7 ,11) is a right angle at E?

Respuesta :

Аноним Аноним

11-04-2021

a=2

Answer:

(m1) slope of DE=(7-1)/(10-a)=6/(10-a)

(m2) slope of EF=(11-7)/(7-10)=4/-3=-4/3

since line are perpendicular

m1m2=-1

6/(10-a) ×-4/3=-1

6/(10-a)=3/4

6×4=3(10-a)

24=30-3a

3a=30-24

a=6/3=2

Answer Link

Otras preguntas

Planet z-34 has a mass equal to 1/3 that of earth, a radius equal to 1/3 that of earth, and an axial spin rate 1/2 that of earth. with g representing, as usual,

integral of 1/(sqrt(x)+cube root of x)

Based on the typical shapes of ecg waves, which wave does this 11th cardiac cycle most resemble?

In the 1950s, more and more homes had television due to

Which of the following is not a lyric poem chorus ode sonnet elegy

For each principle in part a select a migration stream identified by the letter on the map shown above, and discuss how the stream you choose illustrates the pr

Why did the third estate propose a change in the estates-general's voting rules?

Which type of figurative language is used in this sentence from George Orwell’s novel Keep the Aspidistra Flying? The public are swine; advertising is the ratt

Fiona sorted her CDs into separate bins. She placed 4 CDs in each bin. If she has 160 CDs, how many bins did she fill?

If you are looking at an object straight on, what type of perspective are you seeing one-point two-point three-point nonlinear