To solve this problem, you can make a proportion:
3/900 = x/2100
In this case, the x represents the pounds that will be needed to cover 2,100 feet.
The first step is to cross multiply like this:
3 * 2100 = 900 * x
Now you can simply the equation.
6300 = 900x
Now you divide both sides by 900 to cancel it out.
7 = x
So, your answer is 7 pounds.
Answer:
x = 15.75
Step-by-step explanation:
I'm going to assume you mean solve for x so:
Answer:
36:56
Step-by-step explanation:
Answer:
(5,-3)
Step-by-step explanation:
y+3 = 3x-15
y= -2x + 7
plulg y in
-2x+7+3 = 3x-15
combine like terms
-2x+10 = 3x-15
add 2x to both sides and add 15 to both
5x=25
x=5
y=-2(5) + 7
y= -10 + 7
y= -3
(5,-3)
