Anil, a student of class X goes to Ganga river with his father. When he sees a boat in the river, then he wants to sit in the boat. So his father Ramesh is ready to sit with him. In this order, Anil is sitting on a boat which goes upstream at a speed of 6km/h and returns downstream at a speed of 14km/h.. When Anil is in the boat, some questions arise in the mind. Please answer the following questions. 1)Find the speed (in km/h)of the boat in still water:
2)Find the speed (in km/h)of stream.
3)Which mathematical concept is used in above problem?
4)Write the direction in which the speed is maximum.
5)Find the average speed of stream and boat in still water.
Please answer fast!!!

78.59 is the mean

step-by-step explanation:

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

0 and 5 minutes

step-by-step explanation:

given that one morning eight buses arrive late by the number of minutes given below:

0 8 2 6 9 2 0 7 8

write these in ascending order

0   0 2 6 7 8 8 9

in the afternoon two more buses arrive at the bus stop say by x and y minutes late.

total number of buses = 10

median = average of 4th and 5th after arranging in ascending order

since 4th entry is 6, the values of x and y should be below 6

also given 0 is the mode so either x or y or both should be 0 because then only 0 gets the maximum frequency and hence mode

thus we have

0 0 0 2 6 7 8 8 9 and another unknown entry which is below 6.

since median is 3.5, we have the unknown entry to be 5 only because then only median =( 2+5)/2

thus the after noon buses were late by 0 and 5 minutes.