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Phantasy [73]
3 years ago
10

A small country is made up of two islands: a big island and a small island. There are currently 530,000 people living on the two

islands. Each year, 3% of the people on the big island move to the small one, and 7% of the people on the small island move to the big one. Assuming the population of the country remains at 530,000, how many people will eventually live on the big island?
Mathematics
1 answer:
Stells [14]3 years ago
7 0

Answer:

  371,000

Step-by-step explanation:

The population will stabilize at a level that has the same number moving in each direction each year. If "b" and "s" represent the numbers of people on the "big" and "small" islands, respectively, we want ...

  b + s = 530,000

  .03b = .07s

From the second equation, ...

  s = (3/7)b . . . . . divide the above equation by .07 and simplify

Substituting this into the first equation, we get ...

  b + (3/7)b = 530,000

  (10/7)b = 530,000 . . . . collect terms

  b = (7/10)(530,000) = 371,000 . . . . . . divide by the coefficient of b

The big island population will stabilize at 371,000 people.

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Ms. Lane borrowed $1,000 from her bank for one year at an interest rate of 10 percent. During that year, the price level went up
Lunna [17]

Answer:

Consider the complete question is,

'Ms. Lane borrowed $1,000 from her bank for one year at an interest rate of 10 percent. During that year, the price level went up by 15 percent. Which of the following statements is correct?

a. Ms. Lane will repay the bank fewer dollars than she initially borrowed.

b. Ms. Lane's repayment will give the bank less purchasing power than it originally loaned her.

c. Ms. Lane's repayment will give the bank greater purchasing power than it originally loaned her.

d. Ms. Lane's repayment will give the bank the same purchasing power that it originally loaned her.'  

Solution :

We have,

The borrowed amount, P = $ 1,000,

Interest rate, r = 10% = 0.1,

Time, t = 1 year,

Thus, the returned amount,

A=P(1+r)^t=1000(1+0.1)^1=1000(1.1) = \$ 1100

∵ A > P

⇒ Ms. Lane will repay the bank greater dollars than she initially borrowed.

Now,  the price level went up by 15 percent,

∵ 1000 + 15% of 1000 = 1000 + 150 = 1500

And, 1500 > 1100

⇒ Ms. Lane's repayment will give the bank less purchasing power than it originally loaned her.

8 0
3 years ago
I really need help they never taught me this in my old school.
SIZIF [17.4K]
To find this, just plug the numbers into the expressions.

5x = y
5(2) = 7
10 = 7
So it can't be A.

x + 2 = y
2 + 2 = 7
4 = 7

x + 4 = y
2 + 4 = 7
6 = 7

2x + 3 = y
2(2) + 3 = 7
7 = 7

The correct answer is
D. 2x + 3
6 0
3 years ago
Explain the relationship between angle W and angles X and Y.
Dmitrij [34]

Answer: w is equal to the sum of angles x and y. (W=x+y)

Step-by-step explanation:

The exterior angle of a triangle (in this case w) is equal to the sum of the two remote interior angles of the triangle (in this case angles x and y)

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You are doing a research project for class and will be analyzing data to create a presentation for your peers.
Flauer [41]

Answer:

You have to write this based on yourself. Just answer each question one by one and then you can compare a whole paragraph.

So for each question you have to choose what you believe you are.

Which social class do you belong to; lower, middle, or upper class?

Why? This could be because you're well off or because you don't have that much money, it depends on which class you believe you are.

Who are your peers? Peers refers to people within the same age bracket as you.

In your everyday choices, whom do you tend to take as a reference point? This is basically asking who influences you, for example your mother or your brother, who do you use as your guidance for how you act. The remaining questions are just asking to specify who, your peers or family members, it's just an addition to the main question.

Step-by-step explanation:

Hope this helps:)

5 0
3 years ago
Olivia uses the work below to determine 55% of 720.
KATRIN_1 [288]

<em>Answer:</em>

C. Step 2: Olivia incorrectly determined One-half of 10% of 720.

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

On the unit test on edge, hope this helps UwU

8 0
2 years ago
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