Answer:
3<9n=6 or 3-9n≤6
Step-by-step explanation:
if you are writing an equation I would go with the second
Step-by-step explanation:

The student didn't make any mistake. The slope of the line between those points is 3/8.
Answer:
| -3 | = 3
Step-by-step explanation:
minus is removed
Answer:
144
Step-by-step explanation:
On this shape we are going to splt up the 4 triangles for the square to make it simple.
So, firstly, plug is the h an w of one of the triangles into the formula for the area of a triangle which is hxw/2
H=9
W=6
9x6/2=27
Then multiply the area of the triangle, 27, to get the total area of all 4 triangles (since they all have the same measurements)
27x4=108
108 is the area of all 4 triangles
Next, just put the l and w into the equation for the area of a square which is lxw
L=6
W=6
6x6=36
36 is the area of the square
Lastly, just add the areas of the triangles and the square together
108+36=144
144 is the total area/surface area, of the pyramid