Step-by-step explanation:
hope i helped pleae mark brainliest
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 area is 70in^2 because you find the area of the square without the missing piece then subtract area of missing piece from total
The equation would be : 10y + 3x = 50
Hope this helps :)
Answer:
I think it's A
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