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3 years ago

Use the formula C = 2πr and find the

Mathematics

2 answers:

guapka [62]3 years ago

5 0

The circumference of the circle would be 18.84 inches.

As you know, we must use the formula C = 2πr.

So we just replace some parts.

C=2π3.

C=6π

18.84

There is also another way.

C = 2πr

To solve a circle, you must add both radius and make it into a diameter.

Then you multiply by π(pi)

Then you will get the answer / circumference.

HACTEHA [7]3 years ago

4 0

C = 2πr

r = 3

Input the variable:

C = 2π3

Multiply:

C = 6π

C = 6*3.14

C = 18.84

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What is the slope of the line

serious [3.7K]

he slope or gradient of a line is a number that describes both the direction and the steepness of the line. ... Slope is calculated by finding the ratio of the "vertical change" to the "horizontal change" between (any) two distinct points on a line.

6 0

3 years ago

How many ways can a committee of 6 be selected from a club with 10 members

Ratling [72]

Answer:

210

Step-by-step explanation:

The general formula for picking k items from a total of n is

$_{n}C_{k} = \frac{n! }{(n-k)!k! }$

Thus, if we want to select a committee of six people from a club with 10 members, the number of combinations is

$_{10}C_{6} = \frac{10! }{(10-6)!6! }$

$= \frac{10! }{4!6! }$

$= \frac{10\times9\times8\times7}{4\times3\times2\times1 }$

$= \frac{5040 }{24 }$

= 210

The committee can be selected in 210 separate ways.

4 0

3 years ago

An education association wants to rent a cotton candy machine for a carnival. There is a deposit to rent it plus an additional $

Vanyuwa [196]

Answer:

rate of change: $8 per hour; the per-hour rental charge
initial value: $75; the deposit on the machine

Step-by-step explanation:

The cost to rent the machine is given as ...

total cost = deposit + ($8 /hour)×(number of hours)

The cost for 5 hours is given ans $115, so we have ...

115 = deposit + 8(5)

75 = deposit . . . . . . . . subtract 40

The "rate of change" is given as $8 per hour, the hourly rental charge.

The "initial value" is called the deposit. It is found to be $75.

8 0

2 years ago

Which expression is equivalent to 8a+3b+4a-9b?? Please help!

Juli2301 [7.4K]

Answer:

12a - 6b

Step-by-step explanation:

Given

8a + 3b + 4a - 9b ← collect like terms

= (8a + 4b) + (3b - 9b)

= 12a + (- 6b)

= 12a - 6b

5 0

3 years ago

What is the perimeter of a square with a side length 6x - 5

jolli1 [7]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{24x - 20}}}}}$

Step-by-step explanation:

Given,

Length ( L ) = 6x - 5

Perimeter of a square ( P ) = ?

Finding the perimeter of a square having length of 6x- 5

$\boxed{ \bold{ \boxed{ \sf perimeter \: of \: a \: square \: = 4l}}}$ ( where l is the side of the square )

plug the value of length

⇒ $\sf{4(6x - 5)}$

Distribute 4 through the parentheses

⇒ $\sf{4 \times 6x - 4 \times 5}$

⇒ $\sf{24x - 20}$

Hope I helped!

Best regards!!

4 0

3 years ago