Answer:
1 7/9
Step-by-step explanation:
Answer:
$
Step-by-step explanation:
Let 
the cost of one brownie, 
cost of one cookie
Times 
on both sides on the second equation above to get the following:
To find the value of 
, use substitution:
the cost of a brownie is $
Hope this helps :)
Answer:
In mathematics, a percentage (from Latin per centum "by a hundred") is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", or the abbreviations "pct.", "pct"; sometimes the abbreviation "pc" is also used. A percentage is a dimensionless number (pure number).
Step-by-step explanation:
Answer:
0.84
Step-by-step explanation:
4x2+13a+10=7
13a=7-10-8
13a=-11
a=-11:13
a=0.84
