4=x/3-5
4=x/-2
x=-8
so -8 it is
So the ratio of the first engine is 4 gasoline: 1 oil. 4:1 ratio. So the question is asking __ gasoline: 5 oil? Simple. For every 1 part of oil is 4 parts gasoline, so for the answer, you'd cross multiply.
Answer:
The rate of change of area is 35360 m /year
Step-by-step explanation:
Let the width of rectangle be w
We are given that a rectangle that is twice as long as it is wide
So, Length of Rectangle = 2w
Area of rectangle A = Length \times Breadth = 
Differentiating area with respect to time

We are given that
and w = 260

Hence the rate of change of area is 35360
Answer:
One solution. (C)
Step-by-step explanation:
Use substitution to solve the problem:
Since we know y is basically 3 less than x, we can plug that into the second equation.
4x-10(x-3)=6
After solving this we get:
x=4. We can plug this into the first equation.
y=4-3
y=1
There is only one solution.