A+b=82
2a+4b=324
Solve for a and b. a is the # of borogoves, b is the # of mome raths.
Answer:
See below
Step-by-step explanation:
The 'mean' is the three numbers added together
then this sum is divided by 3
(5 + 7 + 9 )/3 = 21/3 = 7
Answer:
282/17
Step-by-step explanation:
6+3/34 =207/34
and 207/34+21/2=282/17
positive number times negative number is negative number "(+)(-) = (-)".

we change the mixed numbers to the improper fractions

So
in this problem we can see that there will be 60 people at the party.
Following the conditions for this event that state the following:
$750 for up to 30 people and every extra person pays $20. To show
that the cost will be $1350 in total we simply do this:
For
30 people we have $750 dollars. Now every other person after pays
only $20. That means that another the other 30 people will pay in
total only $600.
If
we add them we get: $750 + $600 = 1350. This shows that the cost will
be $1350.
<span>
I
hope it helps, Regards.</span>