All categories

3 years ago

Please help me ......................

Mathematics

2 answers:

densk [106]3 years ago

6 0

Soooooooooooooo N=18

jekas [21]3 years ago

3 0

Answer:

n = 18

Step-by-step explanation:

The formula for angle sum of a polygon is S = 180 (n - 2), where S is the sum and n is the sides.

We are given that the sum is 2880, and are trying to find n.

Simply sub in S = 2880,

2880 = 180 (n - 2)

Divide by 180 to get (n - 2) by themselves on the right side,

16 = n - 2

Now add 2 to the other side to get n by itself

18 = n

n = 18

Hope this helped!! Please feel free to ask me if there's anything you don't understand from this working

You might be interested in

HELP 10PTS AND BRAINLIESTThe image of a triangle after it has been dilated with a center of dilation at the origin has vertices

Gala2k [10]

Answer:

C is (-18, 24)

Scale factor 1 1/3

A is (9, - 4 1/2) *4 1/2 is also 4.5

Step-by-step explanation:

When we take a look at image B (-24, -12) and pre image B (-18, -9),

we can work out the scale factor by

(-24/-18) and (-12/-9) both equal 4/3

So using the scale factor to go from the pre image to the image,

We can find C coordinate by multiplying pre image C by the scale factor.

C is (-13.5 x 4/3) and (18 x 4/3)

C is (-18, 24)

The scale factor is 4/3, which is the mixed numeral of 1 1/3.

To find the pre image of point A we divide the image by the scale factor

A is (12/(4/3)) and (-6/(4/3))

A is (9, - 4 1/2)

Hope this helps,

Cate

8 0

4 years ago

Read 2 more answers

A penguin walks 10 feet in 6 seconds. At this speed how far does he walk in 45 seconds?

IRINA_888 [86]

Answer:

75 feet

Step-by-step explanation:

45/6 equals 7.5

7.5*10=75

5 0

3 years ago

Read 2 more answers

Find the product of 7 and 28. Use place value and the distributive property to rewrite the product. 7(28) = 7(20 + 8) = = = 196

zimovet [89]

The distributive property lets you expand the product as

$7(20+8)=7(20)+7(8)=140+56$

4 0

3 years ago

Read 2 more answers

Which are correct representation of the inequality minus 32X -5 less than 52 minus X select two options

Murljashka [212]

Answer:

The value of X is more than equal to -1.83.

Step-by-step explanation:

We need to find the correct representation of the inequality 'minus 32X -5 less than 52 minus X'

LHS of the inequality will be : -32x-5

RHS of the inequality will be : (52-X)

So,

$-32X-5\leq 52-X$

Adding X both sides

$-32X-5+X\leq 52-X+X\\\\-31X-5\leq 52$

Adding 5 to both sides,

$-31X-5+5\leq 52+5\\\\-31X\leq 57$

Dividing both sides by -31.

$X\geq \dfrac{-57}{31}\\\\X\geq -1.83$

So, the value of X is more than equal to -1.83.

5 0

3 years ago

What is the sum of the numbers, written in scientific notation?

Aliun [14]

Answer: D) 1.969 x 5

Step-by-step explanation: Hope this help :D

7 0

3 years ago