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3 years ago

How many diagonals does a 12-sided convex polygon have? What is the general

Mathematics

2 answers:

mario62 [17]3 years ago

8 0

Answer:

goodluck!

Step-by-step explanation:

well is 12 sided and has digonal so

DanielleElmas [232]3 years ago

5 0

Answer:

Step-by-step explanation:

No of diagonals in a n sided polygon

$= \frac{n(n-3)}{2}$

Therefore,

No of diagonals in a 12 sided polygon

$= \frac{12(12-3)}{2}$

$= 6\times 9$

$= 54$

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You know the slope of a line and a point on the line that is not the y-intercept. Can you use a graph to write the equation of t

Gnoma [55]

Sure you could as long as you have the point.

for example let's say the slope is 2 and the point we are given is (4,4)

we know that:
$y = mx + b$
plug in the values given
x=4
y=4
m=2

$4 = 2(4) + b$
b, the y intercept equals -4.

so:

$y = 2x - 4$
in this case

6 0

3 years ago

Find the y intercept of (-2,5) and (3,25)

Alex777 [14]

Answer:

The y-intercept is (0, 13).

Step-by-step explanation:

First finf the equation of the line:

The slope = (25- 5) / (3 - -2)

= 20/5

= 4

So its equation is

y - 5 = 4(x + 2)

y = 4x + 13

The y-intercept occurs when x = 0

so y-intercept = 4(0) + 13.

It's (0, 13).

7 0

3 years ago

7x-4y=20 for y when x=3

viktelen [127]

I think it is y=-.25
7*3 - 4y = 20
21 - 4y = 20
subtract 21 from each side
- 4y = - 1
divide each side by - 4
y= -.25

6 0

4 years ago

Read 2 more answers

Here are the shopping times (in minutes) of ten shoppers at a local grocery store.

d1i1m1o1n [39]

The frequency which is to filled in the table is 3,1,2,4.

Given shopping time of ten shopkeeper: 36,20,32,18,20,33,28,34,37,23.

We have to complete the frequency in the table. Frequency of something is the number of times that number is coming.

Shopping time is given as 36,20,32,18,20,33,28,34,37,23.

Intervals for which frequency is given is 18 to 22, 23 to 27, 28 to 32, 33 to 37.

Numbers in the range 18 to 22=18,20,23 therefore 3

Numbers in the range 23 to 27=23 therefore 1

Numbers in the range 28 to 32=32 , 28 therefore 2

Numbers in the range 33 to 37=36, 33, 37, 34 therefore 4.

Hence the frequency which is to filled are 3,1,2,4.

Learn more about frequency at brainly.com/question/254161

#SPJ10

8 0

2 years ago

Eight less a number is less than or equal to seventeen

allsm [11]

Answer:

n ≥ -9

Step-by-step explanation:

Let n = the number

8 less than a number means "n – 8", but

8 less a number means "8 – n," so

8 – n ≤ 17 Subtract 8 from each side

-n ≤ 9 Multiply each side by -1

n ≥ -9

Note: When we multiply by a negative number, we must reverse the inequality.

Check:

Try n = -8.

8 – (-8) ≤ 17

8 + 8 ≤ 17

16 ≤ 17

True.

8 0

3 years ago