Answer:
The first step is to replace the value of x from the first equation with x in the second equation:
x=y-7
3x+15y=-1
3(y-7)+15y=-1
3y-21+15y=-1
18y=-1+21
18y=20
y= =
x=
x=
I think that the answer is £279.30.
to find the area of the shape you multiply 4.6 by 2.4 which is 11.04.
then you need to work out how many boxes you need by dividing the area by 0.8 which gives you 14 boxes.
you then multiply that by the price per box which was £19.95.
This gave me an answer of £279.30.
Answer: 27/64
Explanation: you multiply 3/4 by 3/4 which is 9/16 then you multiply 9/16 by 3/4 which is 27/64
Hope this helps! :)
Answer:
y = 4x - 5
Step-by-step explanation:
Let the coordinates for y-intercept be (0,y).
Now using slope intercept equation,
y = mx + b
7 = 4(3) + b
b = 7 - 12
b = -5
Equation of line.
y = 4x - 5
We need the ordered pairs to choose an answer, but if you want to do it yourself you plug in the x and y values (x,y) and test to see if the equation is true, and equals -19.