4 - 8 = -4
A negative number is alwats at the left in a horizontal line.
Let's try to rapresent it.
-4 -3 -2 -1 0 +1 +2 +3 +4
So, you count from +4 to -4
Your answer is "8 units to the left of 4"
X + y = 12
x - y = 4
From the second equation we can see that x = 4 + y
We can plug this into the first one and get:
4 + y + y = 12
4 + 2y = 12
2y = 12-4
2y = 8
y = 4
And then we can plug that into “x” and get that x = 4 + 4, or x=8
Answer:
D
Step-by-step explanation:
If both legs of the triangle are the same, then, using the rules of pythagorem theorm,
leg A= 4
leg B= 4
Square both the legs and then add so you get the hypotenuse.
4*4=16
4*4=16
Add both them up
16+16=32
Since 32 doesnt have a square root that is a whole number we leave it in the squareroot sign so it looks more clean.