3 years ago

What is the radius of a circle with a circumference of 15 cm

1 answer:

4 0

Answer: The answer that I got is 2.39, i'm not fully sure if it is correct though.

Step-by-step explanation: First, you divide the circumference by pie, the you divide that answer by 2 to get the radius.

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Use Gauss's approach to find the following sums (do not use formulas). 1+3+5+7+...999

muminat

$S=1+3+5+\cdots+995+997+999$
$S=999+997+995+\cdots+5+3+1$
$\implies 2S=(1+999)+(3+997)+(5+995)+\cdots+(995+5)+(997+3)+(999+1)$

$2S=\underbrace{1000+1000+\cdots+1000+1000}_{500\text{ times}}$

(We are adding 500 instances of 1000 because that's how many odd numbers there are between 1 and 1000, inclusive.)

$2S=500\times1000=500000$
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3 years ago

Which name correctly classifies this triangle? A. right B. obtuse C. acute

sergejj [24]

Hello there!

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3 years ago

A bag contains 10 red marbles, 6 blue marbles, and 4 green marble.

Salsk061 [2.6K]

Answer:

7/10 or 70%.

Step-by-step explanation:

There is a total of 20 marbles in the bag.

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3 years ago

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Step-by-step explanation:

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3 years ago

What is the radius of a circle with a circumference of 15 cm​

What is the radius of a circle with a circumference of 15 cm