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Nimfa-mama [501]
3 years ago
5

ss="latex-formula">
Mathematics
1 answer:
Brut [27]3 years ago
5 0

3y = 2(2 + 2y)
3y = 4 + 4y
4y - 3y =  - 4
y =  - 4
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The average adult breathes in about 37L of air every 5 minutes. What is the rate of change of volume of air ?
galben [10]
37L/5 min. = 7.4 L/min.
8 0
3 years ago
China generated 237.188 billion kilowatt-hours (kWh) of wind energy in 2018. The population in China in 2018 was 1.379 billion.
maw [93]

Answer:

172 kilowatts.

Step-by-step explanation:

Energy : 237.188 billion = 237,188,000,000 = 2.37188 × 10¹¹

People : 1.379 billion = 1,379,000,000 = 1.379 × 10⁹

Divide both values : 2.37188 ÷ 1.379 = 1.72; 10¹¹ ÷ 10⁹ = 10² ⇒ 1.72 × 10² or 172 kilowatts.

5 0
1 year ago
There are 9 students in a class. The teacher chooses 2 students to go to the
Ahat [919]

Answer: 72

<u>Step-by-step explanation:</u>

There are 9 students to choose from to go the library. After that person is chosen there are 8 students remaining.

First student  and   Second student

           9           x               8                 = 72

8 0
3 years ago
What is the expanded form of 1203
VikaD [51]
I'm assuming that when you say expanded form, you mean broken down into ones, tens, hundres and so forth. 
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6 0
3 years ago
A bag of marbles contains 28 red marbles, 30 green marbles, and 24 yellow marbles. What is the ratio of red marbles to yellow ma
Basile [38]

Answer:

The answer to your question is 7:6

Step-by-step explanation:

Data

Number of red marbles = 28

Number of green marbles = 30

Number of yellow marbles = 24

Radio = ?

Process

1.- Write the ratio

                   Red marbles : Yellow marbles

2.- Substitution

                                  28 : 24

3.- Simplification

-Divide both terms by 2

                                  14 : 12

-Divide by two both terms

                                    7 : 6

-It is not possible to simplify more.

4 0
3 years ago
Read 2 more answers
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