The equation of a circle is x2 + y2 + 6x + 4y + 10 = 1. What is this equation written in its standard form?

A) (x + 3)2 + (y + 2)2 = 4
B) (x + 6)2 + (y + 4)2 = 4
C) (x + 6)2 + (y + 4)2 = 10
D) (x + 3)2 + (y + 2)2 = 10

answer : A

Step-by-step explanation:

hello :

x² + y² + 6x + 4y + 10 = 1

(x²  + 6x )+(y²+ 4y) + 10 = 1

(x²  + 6x+9-9 )+(y²+ 4y+4-4) + 10 = 1

(x²  + 6x+9)-9 +(y²+ 4y+4)-4 + 10 = 1

(x+3)²+(y+2)² = 4     answer : A

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105