Answer:
Step-by-step explanation:
Hello,
Let's not a and b the two numbers.
<em>One number is seven less than a second number.</em>
(1) b = a - 7
<em>Five times the first is 2 more than 6 times the second. </em>
(2) 5a = 2 + 6b
(2)+5*(1) gives
5a + 5b = 2 + 6b + 5a - 35
b = 35 - 2 = 33
a = 40
The value of the first number is
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
To find one interior angle of a regular octagon first we need to find the sum of all interior angles of the octagon.
There is a formula to find the sum of all interior angles. The formula is
, where n is the total number of sides of the polygon.
For octagon the total number of sides = 8.
So the sum of interior angles of the octagon
=
=
=
Now for regular octagon all the angles are equal.
There are total of 8 angles for the octagon. As all angles are same, we can find one interior angle by dividing the sum of interior angles by the number of angles.
So, the measurement of one interior angle
=
=
We have got the required answer here. The measure of one interior angle of regular octagon is .
So, the correct option is option D.
