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Irina18 [472]
3 years ago
8

An airplane 30,000 feet above the ground

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
8 0

Answer:

553

Step-by-step explanation:

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Compound interest formula = a=P(1+r/n)^nt

P= lump sum to deposit (solving for)

A= amount accumulated over the entire time (20000)

n= number of times interest is compounded annually (1)

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T= total number of years (15)

20000=P(1+0.082/1)^1*15

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A group of college students are going to a lake house for the weekend and plan on renting small cars and large cars to make the
maxonik [38]

The students rented 4 small cars and 8 large cars.

Step-by-step explanation:

Given,

Number of people in small car = 4

Number of people in large car = 7

Total people in both type of cars = 72

Let,

x represent the number of small cars rented.

y represent the number of large cars rented.

According to given statement;

4x+7y=72     Eqn 1

y = 2x           Eqn 2

Putting value of y from Eqn 2 in Eqn 1

4x+7(2x)=72\\4x+14x=72\\18x=72

Dividing both sides by 18

\frac{18x}{18}=\frac{72}{18}\\x=4

Putting x=4 in Eqn 2

y=2(4)\\y=8

The students rented 4 small cars and 8 large cars.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/10557938
  • brainly.com/question/10600222

#LearnwithBrainly

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Robert is 3 years less than half his brothers age.Robert is thirteen years old. How old is his brother?
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Answer:

32

Step-by-step explanation:

13 + 3 = 16 x 2 = 32

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3 years ago
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