Solve using system of equations. y=number of constructed response questions x=number of multiple choice questions x+y=27 y=10x-6 Replace y for 10x-6 in the first equation x+(10x-6)=27 Simplify. 11x=33 x=3 Substitute 3 for x in any equation to get y=24 there are 3 multiple choice and 24 constructed response questions.
U= 9.4m/s v= -7.4m/s (Negative sign because it is in the opposite direction as he is rolling back) t= ? s= ? a= ? Now, a= v-u/t = -7.4-9.4÷3 =-5.6 By the second equation of motion. s= ut+1÷2at*2 ( *2 is the power) s= 9.4×3+1÷2×-5.6×3*2 = 28.2 +(-25.2) =3 Therefore s or the distance travelled is 3m.
