Lesson 4: Let ABC be a triangle. The three altitudes AD, BE, CF intersect at H. let I, J,K be the midpoints of HA, HB, HC respectively. Let M, N, P be the midpoints of AB, BC and CA respectively. Prove that: a) Four points M, P, K, J are on the same circle
B) Six points M, P, K, J, I, N are on the same circle
c) Nine points M, P, K, J, I, N, D, E, F are on the same circle

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

c. (3,2,6) is the answer.

exactly you go it

step-by-step explanation: