areynolds00airbear00 areynolds00airbear00

06-07-2016
Mathematics

contestada

what is the radius of 5x^2+5y^2-20x+30y+40=0

Respuesta :

06-07-2016

Hello,
5x²+5y²-20x+30y+40=0
==>x²+y²-4x+6y+8=0 (divided by 5)
==>(x²-2*2x+4)+(y²+2*3y+9)+8-4-9=0
==>(x-2)²+(y+3)²=5

Center (2,-3)
Radius= √5≈2.2360...

Answer Link

Otras preguntas

When interests rates are low, spending decreases. Please select the best answer from the choices provided T F

Answer BOTH questions thoroughly in the space provided.

Tips for writing intriguing essay hooks?

what a story problem to represent 6÷1/5

15.5% as simplest form

There is a strong negative correlation between latitude above the equator and number of hours of daylight in December 21. A.) explanatory time of year response:

Which of the following is not a symptom associated with hypertension

which of the ordered pairs satisfy the equation below check all that apply y=-9x

The Coriolis effect happen when ?

Which of the following verb undergoes a stem change in the preterit, empezar, querer, segued, cerrar