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Tems11 [23]
4 years ago
10

Square tiles 9-inches on a side cover the floor of a rectangular room exactly. the border tiles are white and all other tiles ar

e blue. the room measures 18 feet by 15 feet. how many tiles are white
Mathematics
1 answer:
NikAS [45]4 years ago
5 0
First convert feet to inches:
18 ft × (12in/1ft)= 216 in
15 ft × (12 in/1ft)= 180 in

divide each side of the room by 9 inches to get number of white tiles per a wall

wall 1(18ft): 216in/9in= 24 white tiles
wall 2(15ft): 180in/9in= 20 white tiles
wall 3(18ft): 216in/9in= 24 white tiles
wall 4(15ft): 180in/9in= 20 white tiles


Lastly, add up all the white tiles and subtract 4 (the tiles that we counted twice because they were the corner tiles and touched both walls)

24+20+24+20-4= 84 white tiles total
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It not necessary that every time the sum of two five digit number is a six digit number.

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4 years ago
Which fractions have a LCD of 30? A. 3/4 1/7 16 B.2/3 1/5 1/15 C. 2/15 1/4 1/3 D. 2/3 1/5 1/6
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Answer:

24a + 16g

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:D Hope this helps! (for real the first part is true)

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