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Zarrin [17]
3 years ago
15

Help me like right know

Mathematics
2 answers:
Ray Of Light [21]3 years ago
3 0

Answer:

B. 530.66 in.

Step-by-step explanation:

The formula to find circumference is \pi r^{2}. The radius here is 13. 13 squared is 169. 169 x 3.14 is 530.66.

Hope it helps!

BartSMP [9]3 years ago
3 0

Answer:

The circumference is approximately 81.68

Step-by-step explanation:

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julsineya [31]
Es número c por qué esa es la respuesta
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3 years ago
Anyone know the answer ?
zepelin [54]

Answer:

I think it's 48000

Step-by-step explanation:

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5 0
3 years ago
Find the cardinal number for the given set.
iris [78.8K]

Answer:

The cardinal number is 12

Step-by-step explanation:

The cardinal number of a set represents the number of distinct elements of the set. That means for this exercise the goal is to identify the total number of elements of the set.

First step. Identifying the elements of the set.

If we look at the sequence 9, 11, 13, ... , 31, we have an arithmetic sequence a_n, so we can start by finding the common difference d.

d = a_{n+1}-a_n

That means we can pick any 2 consecutive terms and find the subtraction of them, so we can pick for example 9 and 11, thus we get

d= 11-9\\d=2

Second step. Finding the number of terms of the arithmetic sequence.

Now to find the number of elements n of that sequence, we can look at the last number of the sequence on this case it is 31, and we can use the formula for the nth term, that is

a_n=a_1 + d(n-1)

Replacing the last term a_n = 31 and the initial term a_1=9, will give us

31=9+2(n-1)

From there we can solve for n, by moving first that 9 to the other side.

31-9=2(n-1)\\22=2(n-1)

Then we can divide both sides by 2, and lastly add by 1.

\cfrac{22}{2} = n-1  \\11 = n-1\\\boxed{n= 12}

Thus since the sequence has 12 elements, we know that the cardinal number of the set is 12.

7 0
3 years ago
For two weeks, Jonah recorded the daily temperature variations in three cities, each in a different geographical region of the c
Alona [7]

Answer:

2. Stepford is the least consistent in daily temperatures because its standard deviation is the highest.

Step-by-step explanation:

Standard deviation is the average amount that each data point is from the mean.  The lower the standard deviation is, the closer each data point is to the mean; this means it is more consistent if it has a low standard deviation.

Stepford has the highest standard deviation; this means it is the most variable, or least consistent.

8 0
3 years ago
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Jerry bought 4 dvds for $71.96. What was the unit rate
Alexxx [7]

Answer:

$17.99 per DVD

Step-by-step explanation:

When being asked for a unit rate, it is asking for the amount of 1. Basically saying you would divide 71.96 by 4.

Which gives you 17.99 which is your answer but make sure to include your units after!

5 0
3 years ago
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