The girls in Lana’s troop set a goal to sell 1,000 boxes of cookies this year. There are 13 girls in the troop. At least how many boxes of cookies should each girl sell to reach their goal?

77

Step-by-step explanation:

Each girl would have to sell at least 77 boxes of cookies to get over 1,000.

1000 boxes divided by 13 girls is 76.9230... but round up to 77.

Check answer by multiplying 13 by 77 and you get 1,001.

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Step-by-step explanation:

Let each cell x boxes, then the sum is:

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1