There are 324 students in Jefferson middle school. 5/12 of the students are 7th graders. 1/4 of the students are 9th graders. The rest are 8th graders. How many students are 8th graders?

They are 108 8th graders at Jefferson Middle School

Step-by-step explanation:

324 x 5/12 = 135 7th graders

324 x 3/12 = 81 9th graders

324 x 4/12 = 108 8th graders

you should at least use a calculater

step-by-step explanation:

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm