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uranmaximum [27]
3 years ago
11

Slove the followings.

Mathematics
1 answer:
DaniilM [7]3 years ago
7 0

2. The number of adults who live in the house is <em>3</em><em> </em>(1,200/400).

3.a. If an adult recycled the <em>glass, paper, and card</em> that have 42% of the rubbish, the adult will generate 232 kg (400 kg x (1 - 42%) of rubbish.

b. If the adult, in addition, had a <em>composite for vegetable and decomposable material</em>, he will generate 152 kg (400 kg x (1 - 62%).

Data and Calculations:

1 ton = 1,000 kg

Weight of rubbish produced by an adult per year = 400 kg

Total kg of rubbish produced by the family = 1,200 kg (1,000 x 1.2)

Percentage of Vegetable and decomposable material = 20%

Percentage of glass, paper, and card = 42% (33% + 9%)

Learn more: brainly.com/question/14954924

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At Billy‘s preschool they have bicycles and tricycles with a total of 57 wheels. The number of bicycles is three less than three
ikadub [295]
Use b for bicycles b and t for tricycles.

We know that each bicycle has 2 wheels, and each tricycle has 3 wheels, and if the entire number of wheels is 57, that means the 

equation would be: 2b + 3t = 57

We can "separate" b by calling it "25 - t" as an alternative, 

2(25 - t) + 3t = 57, or

50 - 2t + 3t = 57,

or 50 + t = 57, so

t = 7 So there must be 18 bicycles and 7 tricycles.

CHECKING:You can check this out by multiplying 7 tricycles x 3 wheels, which is 21,

and 18 bicycles x 2 wheels, which is 36

36 + 21 = 57
6 0
3 years ago
Can u plz answer this it’s for a test !! 15&amp;16 PLZ
ss7ja [257]

Answer:

15. 6647.61

16. 553

Step-by-step explanation:

7 0
2 years ago
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Order the set of numbers from least to greatest
BartSMP [9]
11/20 = 55/100 = 0.55
1/2 = 50/100 = 0.50
0.51 

1/2. 11/20, 0.51  (least to greatest)

C is your answer

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3 0
3 years ago
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PLEASE HELP ONE QUESTION THATS IT
dybincka [34]

Answer:

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Step-by-step explanation:

3 0
3 years ago
What is the value of<br> 22+3−5 when x=-2?
Reika [66]

Answer:

There is no x in the equation, bu the equation you posted equals 20.

Step-by-step explanation:

22+3−5

25-5=20

6 0
3 years ago
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