There are actually 2 variations in this case.
> First case: the number of sides is an odd number
<span> The number
of lines of symmetry is simply equal to number of sides</span>
> Second case: the number of sides is an even number
<span> The
number of lines of symmetry is equal to twice the number of sides</span>
• Use opposite operation to isolate x
28 ➗ 25 = 25x
• Write the value of x
X = 1.12
Answer:
Answer:
x= 29/11 or y= 25/11
Step-by-step explanation:
2x - y= 3 ...........equation 1
x + 5y= 14 ............equation 2
Make x the subject of the formula in equation 2
x= 14 - 5y ..............equation 3
Substitute x=14 - 5y in equation 1
2(14- 5y) - y=3
28 - 10y - y=3
Collect like terms
-10y - y=3 - 28
-11y= -25
divide both sides by coefficient of y
-11y/-11 = -25/-11
y= 25/11
Substitute y= 25/11 in equation 3
x=14 - 5(25/11)
x= 14 - 125/11
x= 29/11
Step-by-step explanation:
Answer:
58
Step-by-step explanation:
do the right first
then subtract
A rule of polygons is that the sum<span> of the </span>exterior angles<span> always equals 360 degrees, but lets prove this for a regular </span>octagon<span> (8-sides). First we must figure out what </span>each<span>of the interior </span>angles<span> equal. To do this we use the </span>formula<span>: ((n-2)*180)/n where n is the number of sides of the polygon</span>
