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3 years ago

How do you find the circumference of a cirlcle?

2 answers:

7 0

There are 2 formula to find the circumference of a circle.

$\huge{\boxed{\bf{Circumference=2\pi r}}}$

$\huge{\boxed{\bf{Circumference=\pi D}}}$

$\pi$ is approximately 3.14
r is radius
D is diameter

and just a side note, $\huge{\boxed{\bf{2 r = D}}}$
Hope that formula helps you :)

Maksim231197 [3]3 years ago

5 0

Answer:

2rPi:

Step-by-step explanation:

You can multiply the radius by 2, which gives you the diameter. Then you multiply by Pi, which is 3.14 OR 22/7. If you are in Khan Academy, don't use 22/7.

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Frank had $65. He spent $2 per day for 7 days. Then he was given $9 to divide equally between himself and his 2 brothers. The fo

natulia [17]

Step-by-step explanation:

65 - 2 × 7 + 9 ÷ 3

65 - 14 + 3

51 + 3 = 54

Option A is the correct answer

6 0

2 years ago

You want to make a rectangular banner that is 18ft. Long with a trim around the entire border of the banner . You have no more t

lys-0071 [83]

Answer:

6 ft

Step-by-step explanation:

Given that:

Length of rectangular banner = 18 ft

Total trim of banner available = 48 ft

To find:

Possible widths of the banner = ?

Solution:

Maximum trim available of the banner around the entire border of the banner = 48 ft

i.e. we are given the total perimeter of the rectangular banner.

Formula for perimeter of a rectangle is given as:

$Perimeter = 2 \times (Length + Width)$

Putting the values of perimeter and length to find the value of width.

$48 = 2 \times (18 + Width)\\\Rightarrow 48 =36+2 \times Width\\\Rightarrow 2 \times Width = 48-36\\\Rightarrow 2 \times Width = 12\\\Rightarrow \bold{Width = 6\ ft}$

So, width possible is <em>6ft.</em>

3 0

3 years ago

Suppose a researcher is testing to see if a basketball player can make free throws at a rate higher than the NBA average of 75%.

stich3 [128]

Answer: A. Repeated results if the player makes 75% of his shots in the long run.

Step-by-step explanation:

The null distribution is always the opposite of the alternative distribution which in most cases represents the claim or hypothesis which is to be tested or performed. In the scenario given, the challenge is to show that a basketball player has an average higher than that of the NBA. NBA average stands at 75%. The alternative hypothesis is the claim, which is ;

H1 : μ > 75%

THE null is thus :

H0 : μ = 75% ; which means that repeated result of the player will yields an average of 75%

3 0

3 years ago

At the movie theatre, child admission is $5.60 and adult admission is $9.50. On Saturday, four times as many adult tickets as ch

romanna [79]

Answer:

-6.20x-6.20y=-948.6

add this to equation 2

6.20x-6.20x +9.30y-6.20y=1125.30-948.60

3.10y= 176.70

/3.10

y=176.70/3.10

y = 57 number of adult tickets

153-57=96 child tickets

Step-by-step explanation:

child admission is $6.20 : x numbers

adult admission is $9.30 : y numbers

153 tickets were sold

sales of $1125.30 .

x+y = 153.........................1

6.20x+9.30y= 1125.30..............2

4 0

3 years ago

a bakery sold 31 bagels in the first hour of business and 42 bagels in the second hour. if the baker had 246 bagels to start, ho

bogdanovich [222]

Answer:

173 bagels were left after the second hour!!

Step-by-step explanation:

7 0

2 years ago