Answer:
Step-by-step explanation:
a=-7
r=21/-7=-3

Answer:
16 dimes
Step-by-step explanation:
He already has 7, and got 9 more, so we can add 7 and 9
7+9 =16
So, Dan has 16 dimes now
Hope this helps! :)
Answer:
thx
Step-by-step explanation:
Answer:
Step-by-step explanation

⇒ 80 + ( 2 * 0.01 ) + ( 9 * 0.001 )
⇒ 80 + 0.02 + 0.009
= 80.029