Equal to is under is fewer has maximum value is over is at most
For a square, the area is the square of the side length (length x width = area, but in a square length = width). That means the side length is the square root of the area.
In this case the side length is the square root of 121, which is 11. Answer is C.
In the given question , we have a function given , which is
And we need to find the value of y when x=5.
So we substitute 5 for x and solve for y, that is
And on rounding to the nearest tenths, we will get
So when x=5, y=0.4
-4x+y=6
-5x-y=21
Solve for one side of either equation. I will use the first equation and solve for y.
-4x+y=6
+4x +4x
Y=4x+6
-5x-y=21
Now when you substitute, make sure to distribute properly including the easily missed negative.
-5x-(4x+6)=21
-5x-4x-6=21
-9x-6=21
-9x=27
X=27/-9
X=-3
Now that you know X, substitute to find Y.
Y=4(-3)+6
Y=-12+6
Y=-6
So your final answer is:
X=-3 Y=-6
(-3,-6)
