Answer:
The average of the four numbers is 79.
Multiply out as indicated: <span>9(r - s) + 5(2r - 2s) = 9r - 9s + 10r - 10s. Next, combine like terms, obtaining 19r -19s (answer)</span>
Answer:
b
Step-by-step explanation:
Answer: 0.21
Step-by-step explanation:
2/10=0.2
1/100=0.01
0.2+0.01=0.21