There are 412 students at sunshine middle school. 225 students are in 5th 6th grade and the rest are in 7th or 8th grades. how many students are in 7th or 8th grades. show work, .

a textbook company ships a dozen crates to ocean hill collegiate. each creat contains 16 textbooks. each textbook has 89 pages. how many total pages are in the shipment. show work, .

187 students in 7th or 8th grade

17,088 pages

Step-by-step explanation:

412 - 225 is 187.

A dozen is 12

12 x 16 x 89 = 17,088

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²