Answer:
x,y,z=4,3,-4
Step-by-step explanation:
2x+4y-6x=44 = x+2y-3z=22
x+2y-3z=22
x+2y+3z=-2
x+2y-3z=22
3x-4y+4z=-16
x+2y-3z=22 ------>
2x+4y=20
x+2y+3z=-2 ------>
x+2y-3z=22 ------>
13x-4y=40
3x-4y+4z=-16 ------->
2x+4y=20
13x-4y=40
y=3
x=4
4+2x3-3z=22
z=-4
(x,y,z)=(4,3,-4)
2x4+4x3-6x(-4)=44
4+2x3+3x(-4)=-2
44=44
-2=-2
-16=-16
(x,y,z)=(4,3,-4)
I am so sorry if it is incorrect I tried :<
Answer:
It is called a rectangular prism
It has 8 vertices
7. 3.14(12^2 - 10^2)=3.14(144-100) = 3.14(44)=138.16
8. A = piR^2 = 50.24. R^2 = 50.24/3.14 = 16. R = 4cm
9a) Perimeter of square is 4*18 = 72. Perimeter of circle is 2*pi*r. r=9in
perimeter of circle is then 2*3.14.9 = 56.52. Difference is 72-56.52 = 15.48
9b) Area of square is 18^2 = 324.
Area of circle is 3.14(9^2) = 254.34. Difference is the unshaded part
324-254.34 = 69.66in^2
Using formula: <span>A=Pi*r^2
A would represent the area of the whole mural but we would plug in r as 25, 50 is the whole width half of it is 25 which is the radius. the whole circle has a degree of 360 but we need the area of 38 degree.</span><span>
A=38/360*pi*25^2
=16.57</span>
