Answer is 0.6 decimetres long
Answer:

Step-by-step explanation:

put it into an equation..
15+5v
sum is addition and product is multiplication
Answer:
b = -30
Step-by-step explanation:
-b/5 - 27 = -21
~Add 27 to both sides
-1/5b = 6
~Multiply -5 to both sides
b = -30
Best of Luck!
D, add all your answers than divide by how many numbers there are