Answer:
Hope this helped.
Step-by-step explanation:
2:x=2y+20 y=1/2x-10
4:x=4/5y+15/5 y=5/4x-4
6:x=-2y+10 y=-1/2x+5
8:x=-7/3y+100/3 y=-3/7x+100/7
Answer:

Step-by-step explanation:
<h3>First let's write our equation</h3><h3 /><h3>

</h3><h3 /><h3>Reduce</h3>
<em>Definition - </em><em>reduction refers to the rewriting of an expression into a simpler form</em>
<h3 />
We can reduce
to 
Our equation is now 
Now we can cross multiply
<em>Definition - </em><em>given an equation between two fractions or rational expressions, one can cross-multiply to simplify the equation or determine the value of a variable.</em>

<h3>Add</h3>
We are adding because we want our variable to be on one side of the equation

<h3>To check we can show our equation but instead of d we have 18</h3><h3 />

Subtract and we get

Which makes it true
<h3><em>Have a good day!</em></h3>
Answer:
<h2>A. -2x³ - 6x² + 9x</h2>
Step-by-step explanation:

Answer:
Blue cars, B = 63 cars
Step-by-step explanation:
Let the blue cars be B.
Let the red cars be R.
Given the following data;
Ratio of B:R = 9:7 = 9 + 7 = 16
Red cars, R = 49
To find the number of blue cars;
First of all, we would determine the total number of cars using the expression;
R = 7/16 * x = 49
7x = 49 * 16
7x = 784
x = 112 cars
Now, we can find the number of blue cars;
B = 9/16 * 112
B = 1008/16
Blue cars, B = 63 cars
I think it should be w+28/4 if thats one of the answer choices.