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

Caracteristias de mitos
Which of these decisions would most likely lead to severe consequences? a)Using over-the-counter medication during allergy season b)Drinking caffeinated beverag
Which of the following was not precedent set by George Washington. A Banning of political parties are B neutrality are C leaving office after two terms leav
what is the answer to (3x-15) degrees
A right triangle has an angle that measures 55 degrees. The leg adjacent to this angle has a length of 43 cm. What is the length of the other leg of the triangl
Choose all that apply. The two minor Indian kingdoms studied in this chapter were the: Pandyan Gupta Pallavas Mauryan
How good and pleasant it is when god's people live together in unity?
Can u please help me with this math assignment
What minimum speed is required for the ball to clear the 0.90-m-high net about 15.0 m from the server if the ball is "launched" from a height of h = 2.80 m ?
Which equation is shown on the graph? A. y = x + 2 B. y = 2x C. y = x + 1 D. y = x – 2