MATHEMATICS HIGH SCHOOL

the population of China is about 1.4 x 10 to the power of 9 people. Julie grew up in a town with a population of about 7,000 people. How many times greater is the population of China than Julie's hometown? Please answer this in scientific notation.

Answers

Answer 1

Answer:

Answer:

2 x 10^5

Step-by-step explanation:

Given

Population of China = 1.4 x 10^9
Population of town = 7000 = 7 x 10^3

The difference in population

1.4 x 10^9 / 7 x 10^3 =
14 x 10^8 / 7 x 10^3 =
2 x 10^5

Answer 2

Answer:

The population of China is 0.2 million times greater than the population of Julie's hometown.

What is the population?

To find out how many times greater the population of China is than Julie's hometown, we can set up a ratio using scientific notation:

Population of China = 1.4 x 10⁹

Population of Julie's hometown = 7,000 = 7 x 10³

Ratio = Population of China / Population of Julie's hometown

Ratio = (1.4 x 10⁹) / (7 x 10³)

Now, divide the numbers and subtract the exponents of 10:

Ratio = $2 * 10^((8 - 3))$

Ratio = 0.2 x 10⁶

So, the population of China is 0.2 million times greater than the population of Julie's hometown.

Learn more about population here: brainly.com/question/29885712

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Answers

Answer:

The value of w cannot be a negative number.

Substitution is used to replace the variable l with a value of 20.

The subtraction property of equality is used to isolate the term with the variable w.

Step-by-step explanation:

Answer:

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Step-by-step explanation:

A movie theater charges 5 for an adult ticket and 2 for a child's ticket. One Saturday the theater sold 785 tickets for 3,280. How many adult and children tickets were sold for the movie saturday?

Answers

Answer: 570 adult tickets and 215 children tickets were sold

Step-by-step explanation:

Let x represent the number of adult tickets that were sold for the movie Saturday.

Let y represent the number of children tickets that were sold for the movie Saturday.

One Saturday the theater sold 785 tickets. This means that

x + y = 785

The movie theater charges 5 for an adult ticket and 2 for a child's ticket. The total sales on Saturday was 3280. This means that

5x + 2y = 3280 - - - - - - - - - - --- 1

Substituting x = 785 - y into equation 1, it becomes

5(785 - y) + 2y = 3280

3925 - 5y + 2y = 3280

- 5y + 2y = 3280 - 3925

- 3y = - 645

y = - 645/- 3

y = 215

x = 785 - y = 785 - 215

x = 570

Solve the equation 3(x+2)=5x-2

Answers

      3(x + 2) = 5x - 2
3(x) + 3(2) = 5x - 2
      3x + 6 = 5x - 2
   - 3x    - 3x
      6 = 2x - 2
   + 2 + 2
      8 = 2x
      2    2
      4 = x

$3(x+2)=5x-2\n3x+6=5x-2\n5x-3x=6+2\n2x=8\nx=4$

What two numbers add to 17 and multiply to -60?

Answers

-1 and 18
hope i could help:))

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