Afour by four grid of unit squares contains squares of various sizes (1 by 1 through 4 by 4), each of which are formed entirely from squares in the grid. in each of the 16 unit squares, write the number of squares that contain it. for instance, the middle numbers in the top row are 6s because they are each contained in one 1*1 square, two 2*2, two 3*3, and of course the one 4*4.
what is the sum of all sixteen numbers written in this grid?
how about a ten by ten grid?

21 i watched a 3 hr vid explaining it

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du what else would it be

brainliest

y=mx+b

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m slope, b y-intercept

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ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation: