Take the length of one side and add that number to itself 4 times.
Or in formula word,
If the length of one side is x,Then x+x+x+x.
Width is x
length is 3x
(Don't forget that perimeter has 2 sides of width and 2 sides of length)
so perimeter is 400 = 2(x)+2(3x)
400 = 2x+6x
400 = 8x
so x = 50
then the length of the fence is 50ft
the width of the fence is 150ft
Answer:
Step-by-step explanation:
1) First, find the slope of the line. Take two points the line intersects and use them for the slope formula, . We already know the line intersects (-4, -2). Just choose any one of the points you can see the line intersecting (in this case, I chose (0,3)) and plug in its values, too. Then solve:
So, the slope is .
2) Now that you have the slope, plug in values for the point-slope formula, . In order to write a linear equation with it, the , , and have to be substituted for with real values. The represents the slope - which means that we should place there. The and represent the x and y values of a point - and the questions wants us to use (-4, -2), so substitute -4 for and -2 for :
Thus, the answer is .
Costs her 10 so minus 10 from profit
earns 3 per pound
so if she sells x pounds and profit is y then
profit=number of pound sold times cost per pound minus shipping or
y=3x-10
the equation is y=3x-10
it intercepts the y axis at y=-10
intercepts the x axis at x=10/3
some points on the graph are (0,-10) (1,-7) (2,-4), (3,-1), (4,2) etc
see which one is that graph