Please Help!! Find the number of sides of a convex polygon if the sum of the measures of its interior angles is 4680º.

28 sides

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180(n - 2) ← n is the number of sides

Here sum = 4680 , thus

180(n - 2) = 4680 ( divide both sides by 180 )

n - 2 = 26 ( add 2 to both sides )

n = 28

his chances of getting a coin of higher value is 4/19

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15