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Lorico [155]
3 years ago
10

What formula can we use to find the circumference of a circle?

Mathematics
2 answers:
Assoli18 [71]3 years ago
6 0

Answer:

B plz mrk brainliest

Step-by-step explanation:

Olenka [21]3 years ago
5 0

Answer:

we could use the formula C= π2r

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Find the sum of the first 35 terms of the following series, to the nearest integer.<br> 3, 11, 19...
Tems11 [23]
<h3>Answer:   4865</h3>

=======================================================

Explanation:

The sequence {3,11,19,...} is arithmetic since we are adding 8 to each term to get the next one

  • 3+8 = 11
  • 11+8 = 19

etc. This means the common difference is d = 8.

The first term is a = 3

Let's use this formula

S = n*(2*a + d(n - 1) )/2

so we can find the sum of the first n terms. In this case, n = 35

So,

S = n*(2*a + d(n - 1) )/2

S = 35*(2*3 + 8(35 - 1) )/2

S = 35*(6 + 8(34))/2

S = 35*(6 + 272)/2

S = 35*(278)/2

S = 35*139

S = 4865

4 0
3 years ago
Pls do this one i have quiz at this so ya pla do it i only have 20 minutes pls​
steposvetlana [31]

Answer:

Answers for the question

(1.)320cm3 (2.)144cm3. (3.)330cm3. (4.)160cm3.(5.)336cm3. (6.)1440cm3. (7.)7500cm3. (8.)20000. (9.)1500000

please the three besides cm is cm raise the power three meaning cm-cube

5 0
3 years ago
What is the volume of this cube? Enter you answer as a decimal in the box.
Katyanochek1 [597]
Solution: V=a^3=3=0.5^3=0.125 
so your answer is 0.13, hope this helps!
5 0
3 years ago
A sample of n=8 scores has a mean of m=12. What is the value of ∑x for this sample
Andrews [41]

A sample of n=8 scores has a mean of m=12. What is the value of ∑x for this sample

Answer: We are given the mean of 8 scores is 12.

We are required to find the sum of these 8 observation's, \sum x

We know that:

\bar{x}=\frac{\sum x}{n}

We are given:

\bar{x} = 12, n=8

\therefore 12=\frac{\sum x}{8}

      \sum x = 12 \times 8

      \sum x=96

Hence, sum of 8 observation's, \sum x =96

7 0
3 years ago
PLEASE HELP !! ILL GIVE BRAINLIEST !!
zhenek [66]

Answer:

BCF and GFC

EFC and DCF

because they are alternate

3 0
2 years ago
Read 2 more answers
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