The amount of balls in a given layer can be found by squaring the layer it is in
4 layers
top layer (1st) is 1
2nd is 4
3rd layer is 9
4th is 16
add them up
1+4+9+16=30
30 in that pyramid
The answer is by using the measuring tape
Answer:
Y = 35
Step-by-step explanation:
1: m=-4
2: b=-4
3: -9=k
4: C=-11.4
5:X<10
D, its (x,y) and (8.2,5.7) are the only ones that match up
