seven women have a mean weight of 63 kg and eleven men have a mean weight of 74 kg find the mean weight (to 1 decimal place ) of all 18 men and women

68.5

Step-by-step explanation:

Add the mean weighs of the women and men together then divide by 2 to get the total mean weigh. (Mean is an average)

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

add 5 subtract 1

step-by-step explanation: