All categories

3 years ago

How many sides of a polygon have if the sum of the measures of its angle is 2880?

1 answer:

4 0

Using the sum of interior angles formula;

(n-2)×180=sum
(n-2)×180=2880
n-2=2880/180
n-2=16
n=16+2
n=18

Therefore, this polygon would have 18 sides.

Hope I helped :)

You might be interested in

Hurry 50 points for correct answer

Ad libitum [116K]

Answer: <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>

Step-by-step explanation:

The equation $x=\sqrt{6x+7}$ can be solved by squaring both sides:

$x^2 = 6x + 7\\\\x^2 - 6x - 7 = 0\\\\(x-7)(x+1) = 0$

We can see that -1 and 7 are solutions, but make sure they are not extraneous by substituting them in the original equation:

$1 = \sqrt{-1}\\ 7 = \sqrt{49}$

The square root of 49 equals 7, but the square root of -1 is an imaginary number.

The correct choice is <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>

4 0

3 years ago

Please help me with this homework

TiliK225 [7]

Answer:

what do you need help with

Step-by-step explanation:

5 0

2 years ago

What is the perimeter of rectangle with vertices located at (- 3, - 1), (5, - 1), (5, 9) and (- 3, 9) on the coordinate ?

xxMikexx [17]

Answer:

32 units^2

Step-by-step explanation:

Finding the width and the length:

One side = √[(-1 - (-1)^2 + (5 - (-3))^2]

= √(0 + 64)

= 8.

The adjacent side = √(9-9)^2 + (-3-5)^2

= 8.

Perimeter - 4 *8 = 32 units^2.

3 0

3 years ago

Someone please help with this question for my baby sister

Aleks04 [339]

Answer: HI! its B

Step-by-step explanation:

have a great day tell your sis i said hi!

8 0

2 years ago

What is (x - 3)2 + 2x - 4 for x=5 ?

yuradex [85]

Answer:

$(x - 3)2 + 2x - 4 \\ (5 - 3)2 + 2 \times 5 - 4 \\ (2) \times 2 + 10 - 4 \\ 4 + 10 - 4 \\ 14 - 4 = 10$

7 0

3 years ago