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Goryan [66]
3 years ago
14

6) Maria bought seven boxes. A week later

Mathematics
1 answer:
Musya8 [376]3 years ago
4 0

Answer:

37

Step-by-step explanation:

Maria started with x boxes.

When she bought 7 boxes, she has (x+7).

Half of her boxes are destroyed (x+7)/2.

Half of her boxes left (x+7)/2.

And

(x+7)/2 = 22

x+7=44

x= 44 -7 = 37

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alexdok [17]

Answer:

6; 22; 20 (ft.)

Step-by-step explanation:

1) if the length of the each side are: n; 4n-2 and 4n-4, then the expression of the perimeter can be written: P=n+4n-2+4n-4 or P=9n-6.

2) if according to the condition perimeter is 48 (ft.), then

9n-6=P; ⇔ 9n-6=48; n=6.

3) if n=6, then the required lengths of the sides are:

n=6 (ft.);

4n-2=22 (ft.);

4n-4=20 (ft.)

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