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Degger [83]
3 years ago
6

Round 21,839 to the nearest 100

Mathematics
1 answer:
alex41 [277]3 years ago
8 0

Answer:

21,800

Step-by-step explanation:

800 is the hundreds place.

3 is less than 5, so 8 stays the same.

change all numbers after 8 to zeroes.

you get 21,800

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1060

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A kennel has 115 dogs in total some are puppies and some are adult dogs.The ratio of puppies I to adult dogs in a kennel is 2:3
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Unit 2 Lesson 2:Surface Area
seropon [69]
Part 2) <span>What is the surface area of this cube?
we know that
surface area of a cube=6*b</span>²
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in this problem
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the answer Part 2) is 1350 mm²

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where b is the length side of a cube
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6 0
3 years ago
A particular dam contains approximately 1,900,000,000,000 cubic feet of water. for a week long spike flood, the dam released at
Fantom [35]

Answer:

a) How much water was released during the flood?

14878080000 cubic feet or 14,878,080,000ft³

b) What percentage of the dam was released during the flood?

0.78%

Step-by-step explanation:

a) How much water was released during the flood?

The first step would be to find out how many seconds are in a week

60 seconds = 1 minute

60 minutes = 1 hour

24 hours = 1 day

7 days = 1 week

Hence, the number of seconds in a week =

1 week × (7 days/1 week)× (24 hours/1 day )×( 60 minutes/1 hour) ×( 60 seconds/1 minute)

= 604800 seconds

Therefore, the quantity of water released per week =

604800 seconds × 24,600 cubic feet per second

= 14,878,080,000 cubic feet or 14,878,080,000ft³

b) What percentage of the dam was released during the flood?

This is calculated as quantity released during the week ÷ Quantity of water in the dam × 100%

Quantity of water released during the flood in a week = 14,878,080,000 cubic feet

Quantity of water in the dam= 1,900,000,000,000 cubic feet of water

Percentage of the dam released during the flood =

14,878,080,000 cubic feet ÷ 1,900,000,000,000 × 100

= 0.7830568421%

Approximately = 0.78%

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3 years ago
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