deniseprevette deniseprevette
  • 19-09-2015
  • Mathematics
contestada

Find all points having an x-coordinate of 2 whose distance from the point (-1,-2) is 5

Respuesta :

konrad509
konrad509 konrad509
  • 19-09-2015
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\ 5=\sqrt{(-1-2)^2+(-2-y_1)^2}\\ \sqrt{9+4+4y_1+y_1^2}=5\\ y_1^2+4y_1+13=25\\ y_1^2+4y_1-12=0\\ y_1^2+6y_1-2y_1-12=0\\ y_1(y_1+6)-2(y_1+6)=0\\ (y_1-2)(y_1+6)=0\\ y_1=2 \vee y_1=-6\\\\ \boxed{(2,2),(-6,2)} [/tex]
Answer Link

Otras preguntas

Otis paints the interior of a home for $45 per hour plus $75 for supplies. Shireen paints the interior of a home for $55 per hour plus $30 for supplies. The equ
A clade is a group of organisms that all evolved from a common ancestor. For example, three major clades that can be used to sort organisms are archaea, bacteri
brothers from ReadWorks ​
Antonia Clark, the Senior Marketing Manager of Tough Mudder, talks about how operations teams, creative teams, and merchandising teams have to work collaborativ
________ based on random choice or personal whim, rather than any reason or system
A source from which organisms generally take elements is called
Wir werden dann nach rechts _________. reisen sitzen abbiegen singen
what the number of tome in the cometie serier? What is the number of terms in this geometric series? 1 +2 +4 + ... + 64
Aneesha travels at 50 mph. Morris is traveling at 3 feet per second less than Aneesha. How fast is Morris traveling
The elementary irreversible organic liquid-phase reaction A+B --> C is carried out adiabatically in a flow reactor. An equal molar feed of A and B enters at