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9 square root of 2 + 6 square root of 2 - 2 square root of 6.

Step-by-step explanation:

Because the square root of 18 can be factored by 9 and 9 can be squared, you multiply 3 by 3 to get 9. This is because the square root of 9 is equal to 3. Then because you took away nine from the square root, you have to divide 18 by 9 to get 2. This means, it will become 9 square root of 2. Next, because the square root of 8 can be factored by 4 and 4 can be squared, you have to do 2x3 to get 6. This is because the square root of 4 is 2. Because you took away the square root of 4 from the square root of 8, you have to divide 8 by 4 to get 2. This means it will become 6 square root of 2. Next, because 24 can be factored by 4 and 4 can be squared, you have to do 4x1 because 1 is multiplied by square root of 24. Then, because you took away square root of 4 from 24, you have to divide 24 by 4 to get 6. Therefore, the simplest radical form is 9 square root of 2 + 6 square root of 2 - 2 square root of 6.

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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.