Answer:
Step-by-step explanation:
1 .
- x - 8 < 13
- x < 8 + 13
- x < 21
2.
- x - 8 > -13
- x > 8 - 13
- x > -5
<u>Combined answer</u>
Option 1.
is obtained by eliminating the parameter.
Step-by-step explanation:
Step 1:
We have that
and 
Take
as equation 1.
Assume
is equation 2.
We need to determine a value that is equivalent to t so it can be substituted in equation 2.
Step 2:
If we square equation 1, we get

So we have a value that can replace t, so we substitute this is equation 2.
so
which is the first option.
Answer:
7
Step-by-step explanation:
I need this to be 20 characters oof
Question 1: B- 9 2/6
Question 2: C btw 3-4 liters each
Step-by-step explanation:
-13=4v+8-7v
-13-8=-3v
3v=21
v=7