Answer: 
Step-by-step explanation:
To solve for h, we want to use our algebraic properties.
[multiply both sides by 2]
[divide both sides by w]

Now, we have h alone.
is our answer.
Answer:
The age of each person is:
- Jess is <u>21</u> years old.
- Mac is <u>66</u> years old.
Step-by-step explanation:
To solve this problem you must make two equations. First, we name Jess and Mac as variables:
j = Jess age.
m = Mac age.
Now we make the equations, the first equation has the information "Jess is 12 years less than half as old as Mac":
1. 
The second equation has the information "The sum of their age is 87":
2. 
Now, we replace the first equation in the second one:
And we operate:
We clear the variable m:
How we know Mac's age is 66 years old, we can identify Jess' age with the second equation:
We replace the value of m:
And clear the variable j:
In the end, Jess's age is 21 years old.
Answer:
The answer to that is 9.75
Step-by-step explanation:
Hope this helps! Good luck
A) 27, 81
b) -30,-15
c) -3, 1
d) -320, 1280
Answer:
6 packs
Step-by-step explanation:
you add $4.00 and $2.50 together, and get 6.50 and then divide 39 bye $6.50