All categories

3 years ago

Find the circumference of a circle whose radius is 15.4cm

2 answers:

6 0

$r=15,4\ cm\\C=2\cdot\ \pi\ \cdot\ r\\C=2\cdot\ \pi\ \cdot\ 15,4\ cm\\C=30,8\ \pi\ cm$

$\pi\approx\ 3,14$

$C=30,8\ \cdot\ 3,14\ cm\\C=96,712\ cm$

rodikova [14]3 years ago

4 0

Π = 3,14

c = 2.π.r
c = 2.3,14.15,4
c ≈ 96,7

You might be interested in

Write an equation for the line parallel to the given line that contains C<br> C(2,6); y= -4x + 7

MrRa [10]

Answer:

$y=-4x+14$

Step-by-step explanation:

step 1

Find the slope of the given line

we have

$y=-4x+7$

This is the equation of the given line in slope intercept form

The slope is $m=-4$

step 2

Find the slope of the line parallel to the given line

we know that

If two lines are parallel, then their slopes are the same

therefore

The slope of the line parallel to to the given line is $m=-4$

step 3

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=-4$

$C\ (2,6)$

substitute

$y-6=-4(x-2)$

step 4

Convert to slope intercept form

$y-6=-4(x-2)$

isolate the variable y

$y-6=-4x+8$

$y=-4x+8+6$

$y=-4x+14$

6 0

3 years ago

The mean age of 5 people in a room is 28 years.

lina2011 [118]

Answer:

174

Step-by-step explanation:

You should look at the mean and do this:

5*28 so now you know all the ages which is 140 now you do 140/29 and you get 4.8....... so you can see that the answer is 174

4 0

3 years ago

The sum of five and three times a number

N76 [4]

5 x 3 = 15 is this correct

8 0

3 years ago

Which expression is a sum of a number and a product? O A. 2(x-9) O B. 6x- 4 O c. 4+ 2x O D.

Morgarella [4.7K]

Answer:

Step-by-step explanation:

Option C is the correct answer

5 0

2 years ago

The equation of a line in the point-slope form is show below.

Gwar [14]

Answer:

Answer:

your answer is

m= -3

Math-way is a really good site for these kinds of problems i would recommend it if you need anymore help with stuff like this. :)

Step-by-step explanation:

3 0

3 years ago