The principal observes 8th grade the following day. of the 120 students, 42 brought their lunch from home 72 purchased lunches. ..Of the 120 students, 42 brought their lunch from home, 72 purchased lunches, and brought a
lunch from home and purchased an ice cream. Explain how the principal could use the numbers
from 7th grade to predict the 8th​

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m