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malfutka [58]
3 years ago
5

Find the exact circumference of a circle with the given radius.

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
7 0
I don't see an answer choice for this question. The equation for circumference is 2\pir
You should get 2pi(3.5)=21.99 
olya-2409 [2.1K]3 years ago
6 0
None of the answers are "exact" if you use 3.14 for pi.

That 3.14 is an approx. to pi.

If you want an exact answer, include "pi" in your answer, not a numerical value:

C = 2pi*r becomes     C = 2pi(3.5 cm) = 7pi cm, or 7\pi cm

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There were 135 cars in a rally each driver paid a $25 fee to participate in the rally how much money did the drivers play in all
charle [14.2K]

Total numbers of cars present in the rally is  135

Amount paid by a single driver to participate in the rally = $25

Total amount generated by the participation fee from each driver is equal to the sum of amount paid by all the 135 cars.

Since we cannot add $25 for 135 times, we use multiplication operation.

Total amount = amount paid by one single driver multiplied by the total number of cars.

Total amount = 135 * 25 = 3375 $ .... Answer


7 0
3 years ago
Interest rates are expected to be 10% for the next 3 years and then to fall to 8% for the following 3 years. How much will an in
iVinArrow [24]

Answer:

<em>Below is a breakdown of the results of these different compound periods with a 10% nominal interest rate: Semi-annual = 10.250% Quarterly = 10.381% Monthly = 10.471%</em>

6 0
3 years ago
A/b(2x-12)=c/d solve for x
GenaCL600 [577]

Let's solve for x.

Layout equation:

a/b

(2x−12)=c/d

Step 1: Multiply both sides by b.

2ax−12a=bc/d

Step 2: Multiply both sides by d.

2adx−12ad=bc

Step 3: Add 12ad to both sides.

2adx−12ad+12ad=bc+12ad

2adx=12ad+bc

Step 4: Divide both sides by 2ad.

2adx/2ad=12ad+bc/2ad

So the answer is x=12ad+bc/2ad.

8 0
4 years ago
Read 2 more answers
What is the measure of angle C?
Serggg [28]
Use the law of sines....(sina/A=sinb/B=sinc/C  for any triangle)

What that means is the sine of an angle divided by the length of the side opposite the angle is a ratio that is true each angle/side pair...In this case:

sin90/122=sinc/22  rearrange to solve for sinc

sinc=(22sin90)/122  now take the arcsin to solve for c

c=arcsin[(22sin90)/122]

c≈10.388857815469611987441020361405

c≈10.39° (to nearest hundredth of a degree)
3 0
3 years ago
How can i do this one ☝️
storchak [24]

Hey there!

Let's start by adding 5 to both sides. This eliminates the -5.  

1 = r/20

Now to solve for r we can multiply both sides by 20.

20 = r

Check

-4 = 20/20 - 5

-4 = 1 - 5

-4 = -4

Your answer is r = 20.

Hope this helps!

6 0
3 years ago
Read 2 more answers
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