If the ratio of red hair bands to green hair bands is 5 to 9 with a total of 70 hair bands, how many of them are greeen?

ANSWER

45 green bands

EXPLANATION

The ratio of red hair bands to green hair bands is

5 : 9

The total ratio is:

If there are a total of 70 hair bands,

Then the number of green bands

Simplify

Multiply

Therefore, there are 45 green bands.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

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.