Answer:
1:B
2:C
3:A(I think)
4:D
5:D
6:D
7:C
8:B
9:D
10:C(?)
Explanation:
Hopefully some of these will help!!!
Given parameters:
Each interior angle = 150°
Unknown:
The number of sides of this regular polygon = ?
Solution:
To find the sum of internal angles of a regular polygon, we use the expression below;
(n - 2) x 180 = sum of internal angles of a polygon
n is the number of sides,
Also, the sum of the internal angles of a polygon = number of sides x internal angles;
So;
(n-2) x 180 = 150 x n
Solve for n;
180n - 360 = 150n
180n - 150n = 360
30n = 360
n = 12;
Therefore, the number of sides is 12
Answer:
magnets are used in refrigerator to keep the door closed.
it is used in tv and computer screen.
magnets are also used in electrical bell.All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.Magnets are important because of their properties A particle moving in a magnetic field feels a force proportional to his speed, and to the field, so you can use a magnet that produce a field in a certain way and shape, in order to catch a particle in motion.
i hope this is a clear answer i answered the first question in 10 lines
hope it helps :)
Tegucigalpa is the capital of Honduras. Surrounded by mountains.
