2 because there are 4 numbers of edges and 4 vertices
Whats the problem? I could help lol
Answer:
x=3
Step-by-step explanation:
7x-3=18
7x=18+3
7x=21
x=3
-4d + 2(3+d)= -14
distribute the 2(3+d)
-4d + 6+ 2d= -14
Combine the like terms
-4d + 2d + 6= -14
-2d + 6 = -14
subtract 6 to -14
-2d = -20
divide by -2
d= -20/-2
d= 10
Check your answer
-4(10) + 2(3+ 10) = -14
-40 + 6 + 20
-40 + 26= -14
