Answer: 3) 772.5 kg
Step-by-step explanation: That's what I got and I'm 100% sure that's the answer
5/3*-3*9/18
5*-9/18
-45/18
-2.5
Wait let me know that the .12 means in the first question and i will fix the answer
int (x)(cosx) dx
u=x ----> take derivative du=dx
dv=cosx -----> take integral v=sinx
now use integration by parts
u v - int (v)du
x sinx - int (sinx) (1) dx=
x sinx - (-cos(x)) + c =
answer is = x sinx + cosx + c
3. Here we use the formula

And we have the following values given

So we will get

Question 4.
In this question , we have


Interest is the difference of amount and principal, that is
