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3 years ago

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1) what is the coordinate of the center of circle A) 2: what is the radius of circle A) 3: what is the diameter of circle A) 4:

what is the circumference of circle A) ( for example, C=2*pi*r

1 answer:

Step2247 [10]3 years ago

5 0

Answer:

1. (3'-3) all I can remember from that topic rn xD sry.

Step-by-step explanation:

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The cell phone plan from Company C costs $10 per month, plus $15 per gigabyte for data used. The plan from Company D costs $80 p

DaniilM [7]

Answer:

C(g) = 10 + 15g

C'(g) = 80

The monthly charges of Company C for using 2 Gigabyte of data usage.

Step-by-step explanation:

The cell phone plan from Company C costs $10 per month, plus $15 per gigabyte for data used. The plan from Company D costs $80 per month, with unlimited data.

Now, the monthly cost in Company C for using g gigabyte of data will be

C(g) = 10 + 15g ........ (1)

Again, the monthly cost in Company D for using g gigabyte of data will be

C'(g) = 80 ......... (2)

Now, from equation (1), the statement C(2) = 10 + 15 × 2 = 40, means that monthly charges of Company C for using 2 Gigabyte of data usage.

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3 years ago

A used car has a value of 15,250 when it’s purchased in 2012. The value of the car decreases at a rate of 7.5% per year

kotegsom [21]

p=15250

r=7.5/100=0.075

y = 15250*(1 - 0.075)^x

after 8 years it would be

x = 8

y = 15250*(1 - 0.075)^8

y = $8,173.42

after 8 years the value of the car is going to be $8,173.42

8 0

3 years ago

A circle with a radius of 1/2 ft is dilated by a scale factor of 8. Which statements about the new circle are true? Check all th

AfilCa [17]

The circle is being dilated by a factor of 8 so the radius will be 8 times the original radius (4 ft).

The circumference of a circle = $2\pi r$ , so if r is replaced by $8r$ we get $C = 2\pi * 8r$ or just $C = 8*(2\pi r)$ .

Basically the circumference will be 8 times the original circumference.

If you plug in the original radius, into this new formula you get $C_{new} = 8*(2\pi * \frac{1}{2}) = 8\pi \: ft$

The area of a circle = $\pi r^2$ , so if r is replaced by $8r$ we get $A = \pi*(8r)^2$ or just $A = 64\pi r^2$

Basically the area will be 64 times the original area.

If you plug in the original radius into this new formula you get $A = 64\pi * (\frac{1}{2})^2 = 16\pi \: ft^2$

The answers are A, C, F, G, and H

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3 years ago

Read 2 more answers

Applying probability concepts

sergey [27]

Answer:

See below ↓

Step-by-step explanation:

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true
Probability can range in from 0 to 1
The probability Choosing a card from the deck of card

<u>Applications</u>

Flipping a coin
Throwing a dice in the air
Pulling a red ball out of a bucket of red and white balls
Winning a lucky draw
Of all the events in a sample space adds up to 1

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2 years ago

For each pair of numbers, tell: By what percent of the first number is the second number larger? By what percent of the second n

MAVERICK [17]

The answer for the first question is 33.33%.
Reason: The second number (20) is larger than the first number (15) by 5 and 5 is 33.33% the first number.
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The answer for the second question is 25%, also.
Reason: The first number (15) is smaller than the second number (20) by 5 and it is 25 percent of the second number.
:)

8 0

4 years ago