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Leni [432]
3 years ago
11

It takes 12 hours for a single hose to fill a large vat. When a second hose is added, the vat can be filled in 4 hours.

Mathematics
2 answers:
sveticcg [70]3 years ago
8 0
The answer is 3 because you divide 12 and 4
aliina [53]3 years ago
4 0

Its 6 hours.

I should probably explain it, the reason for this is mainly just by dividing the fact that adding the other hose takes away 8 hours of work we can deduce that the amount of water it can put out can do it 2 times faster than the normal hose so the answer is 6

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Write each decimal in expanded form- <br>a.0.493<br>b.1.222
lapo4ka [179]
0.493 = 0.000 + 0.400 + 0.090 + 0.003
It may be also written as: 0.493 = 0 + 0.4 + 0.09 + 0.003

1.222 = 1.000 + 0.200 + 0.020 + 0.002
It may be also written as: 1.222 = 1 + 0.2 + 0.02 + 0.002
8 0
3 years ago
A jewelry box is in the shape of a rectangular prism with an area of 528 cubic inches. The length of the box is 12 inches and th
Olin [163]
The height is 8 i believe
6 0
3 years ago
if selina 8% commission on sales.on one sale,her commission was $20.40.what was the amount of that sales
Art [367]

Answer:

255

Step-by-step explanation:

8

20.40

=

100

x

%

$

8

x

=

20.40

×

100

x

=

20.40

×

100

8

x

=

$

255

Method 2:

20.40 x

% you want

% you've got

20.40

×

100

8

=

$

255

5 0
3 years ago
over the next 30 years,some estimates place the worlds population going from roughly 7.2 billion people in the world to 10 billi
vredina [299]

Answer:

Current impact in pollution units per day=21.6 billion pollution units per day

Step-by-step explanation:

1 person consumes 3000 kilo-calories per person

Current population=7.2 billion people

Total calories the entire population produces=(7.2 billion×3000)

1000 kilo-calories causes= 1 pollution unit

To get the impact of the entire population=(7.2 billion×3000)/1000=21.6 billion pollution units per day

8 0
3 years ago
A geometry class has a total of 27 students. The number of females is 13 less than the number of males. How many males and how m
Zanzabum

Answer:

20 males, 7 females

Step-by-step explanation:

x=males

x-13=females

x+x-13=27

2x-13=27

2x=40

x=20

20-13=7

6 0
3 years ago
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