5.5hours to drive264 miles
7 hours to drove (264÷5.5)× 7 =....
Answer:
504 combos
Step-by-step explanation:
Cannot use digits twice and last is '7'
9 digits for first place choice
8 digits for second place
7 digits for third place
only '7' for fourth place 9 x 8 x7 = 504 combos
Answer:
1. 31/99 2. 215/999 3. 6704/9999
A negative plus a positive equals a negative