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

Which quantity can be calculated for a solid compound, given only the formula of the compound and the Periodic Table of the Elements? (1) the density of the com
Which of the following does a business setting call for? formal language avoiding slang a detached tone professionalism all of the above all of the above except
Two forms of solid carbon, diamond and graphite, differ in their physical properties due to the differences in their (1) atomic numbers (2) crystal structures (
What did the Declaration of Independence do?
Which ion has the smallest radius? (1) O2- (2) S2- (3) Se2- (4) Te2-
What is the color of the indicator thymol blue in a solution that has a pH of 11? (1) red (3) pink (2) blue (4) yellow
What are the two parts of the U.S. Congress?
Find the GCF of each set of trinomials 60x^2y^2 , 35xz^3
Which polyatomic ion is found in the compound represented by the formula NaHCO3? (1) acetate (3) hydrogen sulfate (2) hydrogen carbonate
Which compound is classified as a hydrocarbon? (1) butanal (3) 2-butanol (2) butyne (4) 2-butanone