Answer:
y<1
Step-by-step explanation:
-2(y-4)+8y+2<16
-2y+8+8y+2<16
6y+10<16
6y<16-10
6y<6
y<6/6
y<1
Answer:
X=24
Step-by-step explanation:
(X+16)°+6x=180°(being co-interior angle)
7x=180-16
X=164÷7
X=23.428
X=23
or,
(3x-1)+5x=180(being co-interior angle)
8x=181
X=181÷8
X=22.625=23
Polyhedron, by definition<span>, is formed by intersecting planes, so each part of its surface is either a vertex or an edge, or a flat piece of a plane.</span>