hbansal hbansal
  • 02-11-2020
  • Mathematics
contestada

Q(–1, a) is 4 √5 units away from P(3, –2). Find all possible values of a.

Respuesta :

surjithayer10 surjithayer10
  • 02-11-2020

Answer:

a=6,-10

Step-by-step explanation:

[tex]4\sqrt{5}=\sqrt{(3+1)^2+(-2-a)^2} \\squaring\\80=16+(2+a)^2\\80-16=(2+a)^2\\(a+2)^2=64\\taking~square ~root\\\\a+2=\pm 8\\either \\a+2=8,\\a=8-2=6\\or\\a+2=-8\\a=-8-2=-10[/tex]

Answer Link

Otras preguntas

In this experiment, "light source" is likely to be the _______ of the experiment, and "plant height" is likely to be the _______ of the experiment.
Which of the following statements about the relationship between the development of technology and patterns of settlement is false? A. The development of techno
Before the 1950s, most immigrants to the United States came from Europe. What change in immigration policy was reflected in the 1965 Immigration Act? 1 Point A
Which rational number equals 0 point 6 with bar over 6? 2 over 3 6 over 10 4 over 5 6 over 5
Another name for the Caribbean region is _____.
You are having a swimming pool installed. a. Find the perimeter of the swimming pool.
A , B , C , D?? Help
in 1895, the Japanese took control of karma and in 1910 made it part of PNJAA ______
Write an expression for the model. Find the sum. A. 2 + 3; 5 B. 2 + (–3); 1 C. 2 + (–3); –1 D. –3 + 2; 5
what does pandora find at the bottom of the box