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AfilCa [17]
3 years ago
9

The formula for the area of a circle is A = r 2. Classify the area of a circle with a radius of 0.75 centimeters as either ratio

nal or irrational.
a) rational

b) irrational
Mathematics
1 answer:
OlgaM077 [116]3 years ago
6 0
First:The area of a circle is πr squared. Not r2
Second. The area of the circle HAS to be irrational because π is an irrational number. The answer would be, if solved for a circle with the radius of 0.75, the area would be 0.5625π, which is irrational. 
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An engineer deposits $2,000 per month for four years at a rate of 24% per year, compounded semi-annually. How much will he be ab
Alex17521 [72]

The amount of money he will be able to withdraw after 10 years after his last deposit is $926,400.

<h3>Compound interest</h3>

  • Principal, P = $2,000 × 12 × 4

= $96,000

  • Time, t = 10 years
  • Interest rate, r = 24% = 0.24
  • Number of periods, n = 2

A = P(1 + r/n)^nt

= $96,000( 1 + 0.24/2)^(2×10)

= 96,000 (1 + 0.12)^20

= 96,000(1.12)^20

= 96,000(9.65)

= $926,400

Therefore, the amount of money he will be able to withdraw after 10 years after his last deposit is $926,400

Learn more about compound interest:

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5 0
2 years ago
I need help!!!!!!!!!!!!!
never [62]

Answer:

The perimeter is 38 but it gets rounded to 40

Step-by-step explanation:

7 0
2 years ago
Nick is a great baby sitter.He makes $9 an hour.Julia is an even better babysitter She makes $12 an hour.Julia works 6 hours eac
serg [7]

Answer:

Nick has to work 8 hours

Step-by-step explanation:

Nick makes 9   works x

Julia makes 12  works 6

first find out how much Julia makes you can do that by multiplying 12 by 6 witch = 72

and we know we are trying to find how many hours Nick needs to work to equal Julia so we knew they are equal

so we have 9X=72

we just have to solve...

divide 72 by 9

leaving use with X=8

4 0
3 years ago
The cost y (in dollars) of renting a segway for x hours is y=30x+25. Find the initial fee and the cost per hour.
Hitman42 [59]

Given:

The cost y (in dollars) of renting a segway for x hours is

y=30x+25

To find:

The initial fee and the cost per hour.

Solution:

We have,

y=30x+25       ...(i)

The slope intercept form of a linear equation is

y=mx+b      ...(ii)

where, m is slope is b is y-intercept or initial value.

From (i) and (ii), we get

m=30,b=25

The value of m is 30, so the slope is 30. It means cost per hour is $30.

The value of b is 25, so y-intercept is 25. It means the initial fee is $25.

8 0
3 years ago
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kakasveta [241]

Answer:

moo (seriously tho this is a joke)

Step-by-step explanation:


7 0
3 years ago
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