Answer: Option (B) is the correct answer.
Step-by-step explanation:
A point at which three altitudes of a triangle meet is known as orthocenter.
Whereas when a circle is inscribed in a triangle and it touches all the sides of a triangle then the center of circle is known as incenter.
When all the three medians of a triangle intersect each other then the point is known as centroid.
Circumcenter is a point where perpendicular bisectors on each side of a triangle bisect and this point is equidistant from all the vertices.
Answer:
31=1/1
33=1/1
30=3/10
3-=-3
Step-by-step explanation:
Correct question:
a sequence U1, U2,U3...... is defined by the relation
. if U1 =2, find U2 and U3
Answer:
U2 = 9
U3 = 23
Step-by-step explanation:
Given sequence;
![U_{n +1} = 2U_n +5](https://tex.z-dn.net/?f=U_%7Bn%20%2B1%7D%20%3D%202U_n%20%2B5)
U1 = 2
U2 = ?
![U_{n +1} = 2U_n +5\\\\U_2 = 2(U_1) + 5\\\\U_2 = 2(2) + 5\\\\U_2 = 4 + 5\\\\U_2 = 9](https://tex.z-dn.net/?f=U_%7Bn%20%2B1%7D%20%3D%202U_n%20%2B5%5C%5C%5C%5CU_2%20%3D%202%28U_1%29%20%2B%205%5C%5C%5C%5CU_2%20%3D%202%282%29%20%2B%205%5C%5C%5C%5CU_2%20%3D%204%20%2B%205%5C%5C%5C%5CU_2%20%3D%209)
Solving for U3;
![U_3 = 2(U_2) + 5\\\\U_3 = 2(9) + 5\\\\U_3 = 18 + 5\\\\U_3 = 23](https://tex.z-dn.net/?f=U_3%20%3D%202%28U_2%29%20%2B%205%5C%5C%5C%5CU_3%20%3D%202%289%29%20%2B%205%5C%5C%5C%5CU_3%20%3D%2018%20%2B%205%5C%5C%5C%5CU_3%20%3D%2023)
72:80
9:10
Divide 72 and 80 by 8 to simplify it and get the ratio
Add half a tenth.
.. 4.9675 +0.05 = 5.0175
Throw away all the digits to the right of the tenths digit.
.. 5.0
Your rounded number is 5.0