Calculate the missing variable. M1 = 4.0 M V1 = 450mL M2 = ? V2 = 800mL

7.1

Explanation:

m1=v1

m2=v2

let m2 be x

4.0=450

x=800

cross multiply

4.0 x 800=450x

3200=450x

x = 3200/450

x=m2=7.1

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year