Acube in 3-d space has vertices
10
10
10
,
13
10
10
,
10
13
10
,
10
10
13
,
13
13
10
,
13
10
13
,
10
13
13
,
13
13
13

a. how do we know that these vertices trace a cube?
b. what is the volume of the cube?
c. let z = 1. find the eight points on the screen that represent the vertices of this cube (some may be
obscured).
d. what do you notice about your result in part (c)?

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step-by-step explanation:

step-by-step explanation:

1

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -