Answer:
38 / 8 is 4.75
Step-by-step explanation:
Um I tried putting a photo of my work but it wouldn't let me sorry ;-;
Answer:
100 not so good seats
50 good seats
Step-by-step explanation:
Let x represent good seats and y represent not so good seats
[i] 3x + 2y = 350
[ii] x+y = 150
[iii] y = 150 - x
substitute this to equation [i]
3x + 2y = .350
3x + 2 (150-x ) = 350
3x + 300 - 2x = 350
3x-2x = 350 - 300
x = 50 good seats
now substitute what you got to equation [iii]
y = 150 - 50 = 100 not so good seats
when we check the answer by using equation [i] we find that it is correct:
3x + 2y = 350
3(50) + 2(100) = 350
150 + 200 = 350
350 = 350
-2,-6 seems like the right anwser to me
Answer:
You can do this without the calculator
115 grams
after 1 half-life = 115 / 2 = 57.5 grams
after 2 half-lives = 28.75 grams
after 3 half-lives = 14.375 grams
after 4 half-lives = 7.1875 grams
after 5 half-lives = 3.59375 grams
after 6 half-lives = 1.796875 grams
Step-by-step explanation:
