Answer:
20 % of the original price
Step-by-step explanation:
1). 50 - 40 = 10 $
2). 10 / 50 = 20 %
Hello,
Assume Ax+By+Cz+D=0 the plane 's equation.
p=(0,0,0)==>A*0+B*0+C*0+D=0==>D=0
q=(0,1,0)==>A*0+B*1+C*0+0=0==>B=0
r=(1,2,3)==>A*1+0*2+C*3+0=0==>A=-3C
Let C=1==>A=-3
An equation of the plane is -3x+z=0
Answer:
Step-by-step explanation:
<u>Similar figures have same ratio of corresponding sides:</u>
<u>Substitute:</u>
- 4 / 8 = 7.5 / 3(x - 1)
- 3(x - 1) = 2*7.5
- x - 1 = 5
- x = 6
Answer:
Center: (0, 6); radius = 4
Step-by-step explanation:
x^2 + y^2 - 12y + 20 = 0
We must complete the square in y.
x^2 + y^2 - 12y = -20
x^2 + y^2 - 12y + 36 = -20 + 36
x^2 + (y - 6)^2 = 16
(x - 0)^2 + (y - 6)^2 = 4^2
Center: (0, 6); radius = 4
The inverse of the function f(x)=1/4x-12 would be 4x-48.