ANSWER
The solution is 
EXPLANATION
We want to solve the simultaneous equations

and
.
We substitute equation (2) in to equation (1), to obtain

This has now become a linear equation in a single variable
.
We solve for x by grouping like terms.


We divide through by negative 3 to get;
.
Hence, the solution is 
Answer:
false
Step-by-step explanation:
-7=(-5)-(-12)
-7=-5+12
-7=7 is not true
Answer:
p=74
a=60
Step-by-step explanation:
1. true
2. true
3. true, because the absolute value can never be negative..
4. false ( if wrong then the question wasnt that specific to me, sorry)
5. true...
if im wrong you have the right to be mad, but to me I feel 90% right about the answers...sorry
Answer:
e will be your answer 405 miles in 9 hours