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2 years ago

Helpppppppppppppppppppppppppp

Mathematics

1 answer:

Ymorist [56]2 years ago

8 0

She has to add 2 more quarters for 108 more days.

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IgorLugansk [536]

Answer:

First question: Choice A

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2 years ago

Graph the linear equation x=-1

kipiarov [429]

Answer:

See below

Step-by-step explanation:

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2 years ago

Which statement is NOT true about this figure?

Lunna [17]

Answer:

od I'd the correct answer

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2 years ago

Graph y=0.4x............................

Leto [7]

Answer:

Look at the image below

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2 years ago

Read 2 more answers

Suppose the population of a certain city is 3031 thousand. It is expected to decrease to 2246 thousand in 50 years. Find the per

Kipish [7]

Answer:

The rate at which the population decrease is 59.8 %

Step-by-step explanation:

Given as :

The population of city = 30,31,000

Now The population of city decrease to 22,46,000

The time period in which population decrease is 50 years

Let the percentage rate of decrease = R%

So,

Final population = initial population × $(1-\frac{Rate}{100})^{Time}$

Or, 22,46,000 = 30,31,000 × $(1-\frac{Rate}{100})^{50}$

Or, $\frac{2246000}{3031000}$ = $(1-\frac{Rate}{100})^{50}$

Or, $\frac{2246}{3031}$ = $(1-\frac{Rate}{100})^{50}$

$(\frac{2246}{3031})^{\frac{1}{50}}$ = $( 1-\frac{Rate}{100})$

So , 0.99402 = $( 1-\frac{Rate}{100})$

Or, $\frac{Rate}{100}$ = 1 - 0.99402

So, Rate = $5.98\times 10^{-3}$ × 100

Or, Rate = 0.598 = 59.8 %

Hence The rate at which the population decrease is 59.8 % Answer

4 0

2 years ago