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Tanzania [10]
3 years ago
12

Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. Substitute the va

lues d1 = 1, C1 = π, and d2 = 2r into the proportion.
StartFraction C 1 Over d 1 EndFraction = StartFraction C 2 Over d 2 EndFraction

Which shows how to correctly solve for C2, the circumference of any circle with radius r?

A. Because StartFraction pi Over 1 EndFraction = StartFraction C 2 Over 2 r EndFraction , C 2 = 2 r pi

B. Because StartFraction 1 Over pi EndFraction = StartFraction C 2 Over 2 r EndFraction ,
2 = StartFraction 2 r Over pi EndFraction

C. Because StartFraction pi Over 2 r EndFraction = StartFraction C 2 Over 1 EndFraction , C 2 = StartFraction pi Over 2 r EndFraction

D. Because StartFraction pi Over 1 EndFraction = StartFraction C 2 Over 4 r EndFraction , C 2 = 4 r pi

Mathematics
2 answers:
DiKsa [7]3 years ago
7 0

Answer:

The answer is A on Edge 2020

Step-by-step explanation:

I did the Quiz

Natali5045456 [20]3 years ago
3 0

Answer: A

Step-by-step explanation:I got it right

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Take any three digit number. Reverse its digits and subtract the smaller of the two numbers from the larger. Determine what numb
rjkz [21]

Answer: 11 is the required number that always divides such differences for the following types of numbers.

Step-by-step explanation:

Take any 3 - digit number, say, 325

On reversing its digit it becomes, 523

On subtracting the smaller of the two numbers from the larger,523-325\\\\=198

we can see that 198 is an even number.

take another number say, 629

On reversing its digit, it becomes = 926

On subtracting , we get that

926-629=297

But 297 is not an even number.

But there is one common in both the cases is that both the differences are divisible by 11.

Hence, 11 is the required number that always divides such differences for the following types of numbers.

8 0
3 years ago
How do you work out percentages
Shkiper50 [21]
You take the decimal of say .48 and pull the it back so it would be 48% 
3 0
3 years ago
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Pls pls help ASAP first correct answer gets brainleist ​
Leno4ka [110]

Answer:

12ch/a

Step-by-step explanation:

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3 0
2 years ago
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With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the en
GuDViN [60]

Answer:

P = 0.1447

Step-by-step explanation:

Given

n = 7000 -- total

d = 180 --- defective

r = 6 --- selected

Required

The probability of rejecting the batch

This means that at least one of the selected piece is defected.

So, we first calculate the probability that all the selected piece are accepted.

So, we have:

Pr = \frac{7000 - 180}{7000} * \frac{6999 - 180}{6999}* \frac{6998 - 180}{6998}* \frac{6997 - 180}{6997}* \frac{6996 - 180}{6996}* \frac{6995 - 180}{6995}

The denominator decreases by 1 because it is a probability without replacement; 180 is subtracted from the numerator to represent the number of non-defective CDs

So, we have:

Pr = \frac{6820}{7000} * \frac{6819}{6999}* \frac{6818}{6998}* \frac{6817}{6997}* \frac{6816}{6996}* \frac{6815}{6995}

Pr = 0.8553

Using the complement rule, the probability that the batch will be rejected is:

P = 1 - 0.8553

P = 0.1447

8 0
3 years ago
Select the problems which show the correct answers. (1.12 x 105) (6.06 x 105) Answer: 6.79 x 1010 (2 x 101)(3.0 x 101) Answer: 6
Arisa [49]
Since multiplication is commutative, we can rearrange the problem: 
(1.12*10^5)(6.06*10^5) = (1.12*6.06)(10^5*10^5)
Using the properties of exponents, we have:
(1.12*6.06)(10^10)
\\=6.7872*10^10

Again, multiplication is commutative, so we rearrange the problem; then we use the product property of exponents:
(2*10^1)(3*10^1)
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(2.775*10^-^4)(4.775*10^4)
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\\=(2.775*4.775)(1)
\\=2.775*4.775=13.250625=1.3250625*10^1

5(8.14*10^2)=(5*8.14)(10^2)=40.7*10^2=4.07*10^3
6 0
3 years ago
Read 2 more answers
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