The better deal is 81.05/20.
The unit rate for 21/5 is:
4.2:1
And the better deals unit rate is:
4.06:1
Answer:
D
Step-by-step explanation:
Common ratio of half means that to get each successive terms, you have to multiply the preceding term by half.
Since first term is 10
2nd term is 
3rd term is 
4th term is 
5th term is 
Answer choice D is right.
Answer:
-1/6
Step-by-step explanation:
4-6x+5=0
-6x+5=-4
-6x=-4+5
-6x=1
6x=-1
x=-1/6
Step-by-step explanation:
14×5=70
8×8=64
(3/70) + (5/64)
= (3×64)+(5×70)
----‐------------------
70×64
= (192+350)/448
=542/448
= 271/224