Eight and six tenths in decimal form is 8.6
Answer:t=1
Step-by-step explanation:
16-2t=t+9+4t
Collect like terms
4t+2t+t=16-9
Combine like terms
7t=7
Divide both sides by 7
7t ➗ 7=7 ➗ 7
t=1
Answer:
-30
Step-by-step explanation:
-20-8=-28
-28-12
=-30
2n-9-5-8n+4n
= 2n-14-4n
=2n-14
A square should have 4 lines of symmetry