Answer:
x^2+y^ 2+2x-4y-11=0
x^2 + 2x + ? +y^2 - 4y + $ = 11 + ? + $
x^2 + 2x + 1 + y^2 - 4y + 4 = 11 + 1 + 4
(x + 1)^2 + (y - 2)^2 = 16
(x - - 1)^2 + (y - 2)^2 = 4^2
Center (-1,2) and radius = 4 (see bold in line above)
Step-by-step explanation:
Answer:
A: 30°
Step-by-step explanation:
Complementary means 90°. So 60+ x =90. 60+30=90.
Answer:
cost of tacos=$2
cost of soda=$1
Step-by-step explanation:
x=price of tacos
y=price of soda
3x+y=7 --> y=7-3x
4x+2y=10 --> y=5-2x
5-2x=7-3x
x=2
y=5-2(2)=1
