Answer:
7 1/8 miles.
Step-by-step explanation:
Answer: 6 - 2z
Step-by-step explanation:
2x+8y=9
4x+16y=18
this is because the second equation is the first equation, but multiplied by 2. if one side is multiplied by 2, so is the other
the answer is 18
Answer: 
Step-by-step explanation:
By definition, negative numbers, positive numbers and zero are Integers.
It is important to remember the multiplication of signs:

You can observe that you must multiply two integers, one of them is negative and the other one is positive. The product will be an integer. Then:

Since any Integer can be written as a fraction, you can rewrite the product by writing
as the numerator and
as the denominator.
Then, this is:
