Your answer woyld be 13=k
<span>Completando cuadrados seria x ^ 2 + 10x + 25 + y ^ 2-4y = 20 + 25 + 4
<span>factorizamos (x + 5) ^ 2 + (y-2) ^ 2 = 49
pero como 49 es (7) ^ 2 lo Escribimos de la siguiente manera
(x + 5) ^ 2 + (y-2) ^ 2 =</span></span> (7) ^ 2
Donde diametro es 2R=D, aplicamos la formula anteriior; 2(7)=D
D=14
I would use mean to find the average shot percent. <- (My opinion)
So you have 20% of blue and 50% of black.
So you have 70% in total that are both blue and black.
100%- 70%= 30%
So that means 30% were neither blue or black.
Do a proportion
30/100= x/30
30 x 30= 900
900 divided by 100= 9
Answer is 9 shirts are neither blue or black
The answer is 45.
explanation: 40+3+2=45.
hope this helps!