There are 90 people in the lunchroom. if there are 9 times as many students as teachers, how many students are in the lunchroom?

there are 80 students

Step-by-step explanation:

you divide 9 by 90 to find how many teachers there are, then subtract it by 90

there are 80 students

Step-by-step explanation:

you divide 9 by 90 to find how many teachers there are, then subtract it by 90

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.

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.